Check if the current instance has UTC timezone. (Both isUtc and isUTC cases are valid.) * @method bool isLocal() Check if the current instance has non-UTC timezone. * @method bool isValid() Check if the current instance is a valid date. * @method bool isDST() Check if the current instance is in a daylight saving time. * @method bool isSunday() Checks if the instance day is sunday. * @method bool isMonday() Checks if the instance day is monday. * @method bool isTuesday() Checks if the instance day is tuesday. * @method bool isWednesday() Checks if the instance day is wednesday. * @method bool isThursday() Checks if the instance day is thursday. * @method bool isFriday() Checks if the instance day is friday. * @method bool isSaturday() Checks if the instance day is saturday. * @method bool isSameYear(DateTimeInterface|string $date) Checks if the given date is in the same year as the instance. If null passed, compare to now (with the same timezone). * @method bool isCurrentYear() Checks if the instance is in the same year as the current moment. * @method bool isNextYear() Checks if the instance is in the same year as the current moment next year. * @method bool isLastYear() Checks if the instance is in the same year as the current moment last year. * @method bool isCurrentMonth() Checks if the instance is in the same month as the current moment. * @method bool isNextMonth() Checks if the instance is in the same month as the current moment next month. * @method bool isLastMonth() Checks if the instance is in the same month as the current moment last month. * @method bool isSameWeek(DateTimeInterface|string $date) Checks if the given date is in the same week as the instance. If null passed, compare to now (with the same timezone). * @method bool isCurrentWeek() Checks if the instance is in the same week as the current moment. * @method bool isNextWeek() Checks if the instance is in the same week as the current moment next week. * @method bool isLastWeek() Checks if the instance is in the same week as the current moment last week. * @method bool isSameDay(DateTimeInterface|string $date) Checks if the given date is in the same day as the instance. If null passed, compare to now (with the same timezone). * @method bool isCurrentDay() Checks if the instance is in the same day as the current moment. * @method bool isNextDay() Checks if the instance is in the same day as the current moment next day. * @method bool isLastDay() Checks if the instance is in the same day as the current moment last day. * @method bool isSameHour(DateTimeInterface|string $date) Checks if the given date is in the same hour as the instance. If null passed, compare to now (with the same timezone). * @method bool isCurrentHour() Checks if the instance is in the same hour as the current moment. * @method bool isNextHour() Checks if the instance is in the same hour as the current moment next hour. * @method bool isLastHour() Checks if the instance is in the same hour as the current moment last hour. * @method bool isSameMinute(DateTimeInterface|string $date) Checks if the given date is in the same minute as the instance. If null passed, compare to now (with the same timezone). * @method bool isCurrentMinute() Checks if the instance is in the same minute as the current moment. * @method bool isNextMinute() Checks if the instance is in the same minute as the current moment next minute. * @method bool isLastMinute() Checks if the instance is in the same minute as the current moment last minute. * @method bool isSameSecond(DateTimeInterface|string $date) Checks if the given date is in the same second as the instance. If null passed, compare to now (with the same timezone). * @method bool isCurrentSecond() Checks if the instance is in the same second as the current moment. * @method bool isNextSecond() Checks if the instance is in the same second as the current moment next second. * @method bool isLastSecond() Checks if the instance is in the same second as the current moment last second. * @method bool isSameMilli(DateTimeInterface|string $date) Checks if the given date is in the same millisecond as the instance. If null passed, compare to now (with the same timezone). * @method bool isCurrentMilli() Checks if the instance is in the same millisecond as the current moment. * @method bool isNextMilli() Checks if the instance is in the same millisecond as the current moment next millisecond. * @method bool isLastMilli() Checks if the instance is in the same millisecond as the current moment last millisecond. * @method bool isSameMillisecond(DateTimeInterface|string $date) Checks if the given date is in the same millisecond as the instance. If null passed, compare to now (with the same timezone). * @method bool isCurrentMillisecond() Checks if the instance is in the same millisecond as the current moment. * @method bool isNextMillisecond() Checks if the instance is in the same millisecond as the current moment next millisecond. * @method bool isLastMillisecond() Checks if the instance is in the same millisecond as the current moment last millisecond. * @method bool isSameMicro(DateTimeInterface|string $date) Checks if the given date is in the same microsecond as the instance. If null passed, compare to now (with the same timezone). * @method bool isCurrentMicro() Checks if the instance is in the same microsecond as the current moment. * @method bool isNextMicro() Checks if the instance is in the same microsecond as the current moment next microsecond. * @method bool isLastMicro() Checks if the instance is in the same microsecond as the current moment last microsecond. * @method bool isSameMicrosecond(DateTimeInterface|string $date) Checks if the given date is in the same microsecond as the instance. If null passed, compare to now (with the same timezone). * @method bool isCurrentMicrosecond() Checks if the instance is in the same microsecond as the current moment. * @method bool isNextMicrosecond() Checks if the instance is in the same microsecond as the current moment next microsecond. * @method bool isLastMicrosecond() Checks if the instance is in the same microsecond as the current moment last microsecond. * @method bool isSameDecade(DateTimeInterface|string $date) Checks if the given date is in the same decade as the instance. If null passed, compare to now (with the same timezone). * @method bool isCurrentDecade() Checks if the instance is in the same decade as the current moment. * @method bool isNextDecade() Checks if the instance is in the same decade as the current moment next decade. * @method bool isLastDecade() Checks if the instance is in the same decade as the current moment last decade. * @method bool isSameCentury(DateTimeInterface|string $date) Checks if the given date is in the same century as the instance. If null passed, compare to now (with the same timezone). * @method bool isCurrentCentury() Checks if the instance is in the same century as the current moment. * @method bool isNextCentury() Checks if the instance is in the same century as the current moment next century. * @method bool isLastCentury() Checks if the instance is in the same century as the current moment last century. * @method bool isSameMillennium(DateTimeInterface|string $date) Checks if the given date is in the same millennium as the instance. If null passed, compare to now (with the same timezone). * @method bool isCurrentMillennium() Checks if the instance is in the same millennium as the current moment. * @method bool isNextMillennium() Checks if the instance is in the same millennium as the current moment next millennium. * @method bool isLastMillennium() Checks if the instance is in the same millennium as the current moment last millennium. * @method bool isCurrentQuarter() Checks if the instance is in the same quarter as the current moment. * @method bool isNextQuarter() Checks if the instance is in the same quarter as the current moment next quarter. * @method bool isLastQuarter() Checks if the instance is in the same quarter as the current moment last quarter. * @method $this years(int $value) Set current instance year to the given value. * @method $this year(int $value) Set current instance year to the given value. * @method $this setYears(int $value) Set current instance year to the given value. * @method $this setYear(int $value) Set current instance year to the given value. * @method $this months(Month|int $value) Set current instance month to the given value. * @method $this month(Month|int $value) Set current instance month to the given value. * @method $this setMonths(Month|int $value) Set current instance month to the given value. * @method $this setMonth(Month|int $value) Set current instance month to the given value. * @method $this days(int $value) Set current instance day to the given value. * @method $this day(int $value) Set current instance day to the given value. * @method $this setDays(int $value) Set current instance day to the given value. * @method $this setDay(int $value) Set current instance day to the given value. * @method $this hours(int $value) Set current instance hour to the given value. * @method $this hour(int $value) Set current instance hour to the given value. * @method $this setHours(int $value) Set current instance hour to the given value. * @method $this setHour(int $value) Set current instance hour to the given value. * @method $this minutes(int $value) Set current instance minute to the given value. * @method $this minute(int $value) Set current instance minute to the given value. * @method $this setMinutes(int $value) Set current instance minute to the given value. * @method $this setMinute(int $value) Set current instance minute to the given value. * @method $this seconds(int $value) Set current instance second to the given value. * @method $this second(int $value) Set current instance second to the given value. * @method $this setSeconds(int $value) Set current instance second to the given value. * @method $this setSecond(int $value) Set current instance second to the given value. * @method $this millis(int $value) Set current instance millisecond to the given value. * @method $this milli(int $value) Set current instance millisecond to the given value. * @method $this setMillis(int $value) Set current instance millisecond to the given value. * @method $this setMilli(int $value) Set current instance millisecond to the given value. * @method $this milliseconds(int $value) Set current instance millisecond to the given value. * @method $this millisecond(int $value) Set current instance millisecond to the given value. * @method $this setMilliseconds(int $value) Set current instance millisecond to the given value. * @method $this setMillisecond(int $value) Set current instance millisecond to the given value. * @method $this micros(int $value) Set current instance microsecond to the given value. * @method $this micro(int $value) Set current instance microsecond to the given value. * @method $this setMicros(int $value) Set current instance microsecond to the given value. * @method $this setMicro(int $value) Set current instance microsecond to the given value. * @method $this microseconds(int $value) Set current instance microsecond to the given value. * @method $this microsecond(int $value) Set current instance microsecond to the given value. * @method $this setMicroseconds(int $value) Set current instance microsecond to the given value. * @method $this setMicrosecond(int $value) Set current instance microsecond to the given value. * @method $this addYears(int|float $value = 1) Add years (the $value count passed in) to the instance (using date interval). * @method $this addYear() Add one year to the instance (using date interval). * @method $this subYears(int|float $value = 1) Sub years (the $value count passed in) to the instance (using date interval). * @method $this subYear() Sub one year to the instance (using date interval). * @method $this addYearsWithOverflow(int|float $value = 1) Add years (the $value count passed in) to the instance (using date interval) with overflow explicitly allowed. * @method $this addYearWithOverflow() Add one year to the instance (using date interval) with overflow explicitly allowed. * @method $this subYearsWithOverflow(int|float $value = 1) Sub years (the $value count passed in) to the instance (using date interval) with overflow explicitly allowed. * @method $this subYearWithOverflow() Sub one year to the instance (using date interval) with overflow explicitly allowed. * @method $this addYearsWithoutOverflow(int|float $value = 1) Add years (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this addYearWithoutOverflow() Add one year to the instance (using date interval) with overflow explicitly forbidden. * @method $this subYearsWithoutOverflow(int|float $value = 1) Sub years (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this subYearWithoutOverflow() Sub one year to the instance (using date interval) with overflow explicitly forbidden. * @method $this addYearsWithNoOverflow(int|float $value = 1) Add years (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this addYearWithNoOverflow() Add one year to the instance (using date interval) with overflow explicitly forbidden. * @method $this subYearsWithNoOverflow(int|float $value = 1) Sub years (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this subYearWithNoOverflow() Sub one year to the instance (using date interval) with overflow explicitly forbidden. * @method $this addYearsNoOverflow(int|float $value = 1) Add years (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this addYearNoOverflow() Add one year to the instance (using date interval) with overflow explicitly forbidden. * @method $this subYearsNoOverflow(int|float $value = 1) Sub years (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this subYearNoOverflow() Sub one year to the instance (using date interval) with overflow explicitly forbidden. * @method $this addMonths(int|float $value = 1) Add months (the $value count passed in) to the instance (using date interval). * @method $this addMonth() Add one month to the instance (using date interval). * @method $this subMonths(int|float $value = 1) Sub months (the $value count passed in) to the instance (using date interval). * @method $this subMonth() Sub one month to the instance (using date interval). * @method $this addMonthsWithOverflow(int|float $value = 1) Add months (the $value count passed in) to the instance (using date interval) with overflow explicitly allowed. * @method $this addMonthWithOverflow() Add one month to the instance (using date interval) with overflow explicitly allowed. * @method $this subMonthsWithOverflow(int|float $value = 1) Sub months (the $value count passed in) to the instance (using date interval) with overflow explicitly allowed. * @method $this subMonthWithOverflow() Sub one month to the instance (using date interval) with overflow explicitly allowed. * @method $this addMonthsWithoutOverflow(int|float $value = 1) Add months (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this addMonthWithoutOverflow() Add one month to the instance (using date interval) with overflow explicitly forbidden. * @method $this subMonthsWithoutOverflow(int|float $value = 1) Sub months (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this subMonthWithoutOverflow() Sub one month to the instance (using date interval) with overflow explicitly forbidden. * @method $this addMonthsWithNoOverflow(int|float $value = 1) Add months (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this addMonthWithNoOverflow() Add one month to the instance (using date interval) with overflow explicitly forbidden. * @method $this subMonthsWithNoOverflow(int|float $value = 1) Sub months (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this subMonthWithNoOverflow() Sub one month to the instance (using date interval) with overflow explicitly forbidden. * @method $this addMonthsNoOverflow(int|float $value = 1) Add months (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this addMonthNoOverflow() Add one month to the instance (using date interval) with overflow explicitly forbidden. * @method $this subMonthsNoOverflow(int|float $value = 1) Sub months (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this subMonthNoOverflow() Sub one month to the instance (using date interval) with overflow explicitly forbidden. * @method $this addDays(int|float $value = 1) Add days (the $value count passed in) to the instance (using date interval). * @method $this addDay() Add one day to the instance (using date interval). * @method $this subDays(int|float $value = 1) Sub days (the $value count passed in) to the instance (using date interval). * @method $this subDay() Sub one day to the instance (using date interval). * @method $this addHours(int|float $value = 1) Add hours (the $value count passed in) to the instance (using date interval). * @method $this addHour() Add one hour to the instance (using date interval). * @method $this subHours(int|float $value = 1) Sub hours (the $value count passed in) to the instance (using date interval). * @method $this subHour() Sub one hour to the instance (using date interval). * @method $this addMinutes(int|float $value = 1) Add minutes (the $value count passed in) to the instance (using date interval). * @method $this addMinute() Add one minute to the instance (using date interval). * @method $this subMinutes(int|float $value = 1) Sub minutes (the $value count passed in) to the instance (using date interval). * @method $this subMinute() Sub one minute to the instance (using date interval). * @method $this addSeconds(int|float $value = 1) Add seconds (the $value count passed in) to the instance (using date interval). * @method $this addSecond() Add one second to the instance (using date interval). * @method $this subSeconds(int|float $value = 1) Sub seconds (the $value count passed in) to the instance (using date interval). * @method $this subSecond() Sub one second to the instance (using date interval). * @method $this addMillis(int|float $value = 1) Add milliseconds (the $value count passed in) to the instance (using date interval). * @method $this addMilli() Add one millisecond to the instance (using date interval). * @method $this subMillis(int|float $value = 1) Sub milliseconds (the $value count passed in) to the instance (using date interval). * @method $this subMilli() Sub one millisecond to the instance (using date interval). * @method $this addMilliseconds(int|float $value = 1) Add milliseconds (the $value count passed in) to the instance (using date interval). * @method $this addMillisecond() Add one millisecond to the instance (using date interval). * @method $this subMilliseconds(int|float $value = 1) Sub milliseconds (the $value count passed in) to the instance (using date interval). * @method $this subMillisecond() Sub one millisecond to the instance (using date interval). * @method $this addMicros(int|float $value = 1) Add microseconds (the $value count passed in) to the instance (using date interval). * @method $this addMicro() Add one microsecond to the instance (using date interval). * @method $this subMicros(int|float $value = 1) Sub microseconds (the $value count passed in) to the instance (using date interval). * @method $this subMicro() Sub one microsecond to the instance (using date interval). * @method $this addMicroseconds(int|float $value = 1) Add microseconds (the $value count passed in) to the instance (using date interval). * @method $this addMicrosecond() Add one microsecond to the instance (using date interval). * @method $this subMicroseconds(int|float $value = 1) Sub microseconds (the $value count passed in) to the instance (using date interval). * @method $this subMicrosecond() Sub one microsecond to the instance (using date interval). * @method $this addMillennia(int|float $value = 1) Add millennia (the $value count passed in) to the instance (using date interval). * @method $this addMillennium() Add one millennium to the instance (using date interval). * @method $this subMillennia(int|float $value = 1) Sub millennia (the $value count passed in) to the instance (using date interval). * @method $this subMillennium() Sub one millennium to the instance (using date interval). * @method $this addMillenniaWithOverflow(int|float $value = 1) Add millennia (the $value count passed in) to the instance (using date interval) with overflow explicitly allowed. * @method $this addMillenniumWithOverflow() Add one millennium to the instance (using date interval) with overflow explicitly allowed. * @method $this subMillenniaWithOverflow(int|float $value = 1) Sub millennia (the $value count passed in) to the instance (using date interval) with overflow explicitly allowed. * @method $this subMillenniumWithOverflow() Sub one millennium to the instance (using date interval) with overflow explicitly allowed. * @method $this addMillenniaWithoutOverflow(int|float $value = 1) Add millennia (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this addMillenniumWithoutOverflow() Add one millennium to the instance (using date interval) with overflow explicitly forbidden. * @method $this subMillenniaWithoutOverflow(int|float $value = 1) Sub millennia (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this subMillenniumWithoutOverflow() Sub one millennium to the instance (using date interval) with overflow explicitly forbidden. * @method $this addMillenniaWithNoOverflow(int|float $value = 1) Add millennia (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this addMillenniumWithNoOverflow() Add one millennium to the instance (using date interval) with overflow explicitly forbidden. * @method $this subMillenniaWithNoOverflow(int|float $value = 1) Sub millennia (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this subMillenniumWithNoOverflow() Sub one millennium to the instance (using date interval) with overflow explicitly forbidden. * @method $this addMillenniaNoOverflow(int|float $value = 1) Add millennia (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this addMillenniumNoOverflow() Add one millennium to the instance (using date interval) with overflow explicitly forbidden. * @method $this subMillenniaNoOverflow(int|float $value = 1) Sub millennia (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this subMillenniumNoOverflow() Sub one millennium to the instance (using date interval) with overflow explicitly forbidden. * @method $this addCenturies(int|float $value = 1) Add centuries (the $value count passed in) to the instance (using date interval). * @method $this addCentury() Add one century to the instance (using date interval). * @method $this subCenturies(int|float $value = 1) Sub centuries (the $value count passed in) to the instance (using date interval). * @method $this subCentury() Sub one century to the instance (using date interval). * @method $this addCenturiesWithOverflow(int|float $value = 1) Add centuries (the $value count passed in) to the instance (using date interval) with overflow explicitly allowed. * @method $this addCenturyWithOverflow() Add one century to the instance (using date interval) with overflow explicitly allowed. * @method $this subCenturiesWithOverflow(int|float $value = 1) Sub centuries (the $value count passed in) to the instance (using date interval) with overflow explicitly allowed. * @method $this subCenturyWithOverflow() Sub one century to the instance (using date interval) with overflow explicitly allowed. * @method $this addCenturiesWithoutOverflow(int|float $value = 1) Add centuries (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this addCenturyWithoutOverflow() Add one century to the instance (using date interval) with overflow explicitly forbidden. * @method $this subCenturiesWithoutOverflow(int|float $value = 1) Sub centuries (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this subCenturyWithoutOverflow() Sub one century to the instance (using date interval) with overflow explicitly forbidden. * @method $this addCenturiesWithNoOverflow(int|float $value = 1) Add centuries (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this addCenturyWithNoOverflow() Add one century to the instance (using date interval) with overflow explicitly forbidden. * @method $this subCenturiesWithNoOverflow(int|float $value = 1) Sub centuries (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this subCenturyWithNoOverflow() Sub one century to the instance (using date interval) with overflow explicitly forbidden. * @method $this addCenturiesNoOverflow(int|float $value = 1) Add centuries (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this addCenturyNoOverflow() Add one century to the instance (using date interval) with overflow explicitly forbidden. * @method $this subCenturiesNoOverflow(int|float $value = 1) Sub centuries (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this subCenturyNoOverflow() Sub one century to the instance (using date interval) with overflow explicitly forbidden. * @method $this addDecades(int|float $value = 1) Add decades (the $value count passed in) to the instance (using date interval). * @method $this addDecade() Add one decade to the instance (using date interval). * @method $this subDecades(int|float $value = 1) Sub decades (the $value count passed in) to the instance (using date interval). * @method $this subDecade() Sub one decade to the instance (using date interval). * @method $this addDecadesWithOverflow(int|float $value = 1) Add decades (the $value count passed in) to the instance (using date interval) with overflow explicitly allowed. * @method $this addDecadeWithOverflow() Add one decade to the instance (using date interval) with overflow explicitly allowed. * @method $this subDecadesWithOverflow(int|float $value = 1) Sub decades (the $value count passed in) to the instance (using date interval) with overflow explicitly allowed. * @method $this subDecadeWithOverflow() Sub one decade to the instance (using date interval) with overflow explicitly allowed. * @method $this addDecadesWithoutOverflow(int|float $value = 1) Add decades (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this addDecadeWithoutOverflow() Add one decade to the instance (using date interval) with overflow explicitly forbidden. * @method $this subDecadesWithoutOverflow(int|float $value = 1) Sub decades (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this subDecadeWithoutOverflow() Sub one decade to the instance (using date interval) with overflow explicitly forbidden. * @method $this addDecadesWithNoOverflow(int|float $value = 1) Add decades (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this addDecadeWithNoOverflow() Add one decade to the instance (using date interval) with overflow explicitly forbidden. * @method $this subDecadesWithNoOverflow(int|float $value = 1) Sub decades (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this subDecadeWithNoOverflow() Sub one decade to the instance (using date interval) with overflow explicitly forbidden. * @method $this addDecadesNoOverflow(int|float $value = 1) Add decades (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this addDecadeNoOverflow() Add one decade to the instance (using date interval) with overflow explicitly forbidden. * @method $this subDecadesNoOverflow(int|float $value = 1) Sub decades (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this subDecadeNoOverflow() Sub one decade to the instance (using date interval) with overflow explicitly forbidden. * @method $this addQuarters(int|float $value = 1) Add quarters (the $value count passed in) to the instance (using date interval). * @method $this addQuarter() Add one quarter to the instance (using date interval). * @method $this subQuarters(int|float $value = 1) Sub quarters (the $value count passed in) to the instance (using date interval). * @method $this subQuarter() Sub one quarter to the instance (using date interval). * @method $this addQuartersWithOverflow(int|float $value = 1) Add quarters (the $value count passed in) to the instance (using date interval) with overflow explicitly allowed. * @method $this addQuarterWithOverflow() Add one quarter to the instance (using date interval) with overflow explicitly allowed. * @method $this subQuartersWithOverflow(int|float $value = 1) Sub quarters (the $value count passed in) to the instance (using date interval) with overflow explicitly allowed. * @method $this subQuarterWithOverflow() Sub one quarter to the instance (using date interval) with overflow explicitly allowed. * @method $this addQuartersWithoutOverflow(int|float $value = 1) Add quarters (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this addQuarterWithoutOverflow() Add one quarter to the instance (using date interval) with overflow explicitly forbidden. * @method $this subQuartersWithoutOverflow(int|float $value = 1) Sub quarters (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this subQuarterWithoutOverflow() Sub one quarter to the instance (using date interval) with overflow explicitly forbidden. * @method $this addQuartersWithNoOverflow(int|float $value = 1) Add quarters (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this addQuarterWithNoOverflow() Add one quarter to the instance (using date interval) with overflow explicitly forbidden. * @method $this subQuartersWithNoOverflow(int|float $value = 1) Sub quarters (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this subQuarterWithNoOverflow() Sub one quarter to the instance (using date interval) with overflow explicitly forbidden. * @method $this addQuartersNoOverflow(int|float $value = 1) Add quarters (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this addQuarterNoOverflow() Add one quarter to the instance (using date interval) with overflow explicitly forbidden. * @method $this subQuartersNoOverflow(int|float $value = 1) Sub quarters (the $value count passed in) to the instance (using date interval) with overflow explicitly forbidden. * @method $this subQuarterNoOverflow() Sub one quarter to the instance (using date interval) with overflow explicitly forbidden. * @method $this addWeeks(int|float $value = 1) Add weeks (the $value count passed in) to the instance (using date interval). * @method $this addWeek() Add one week to the instance (using date interval). * @method $this subWeeks(int|float $value = 1) Sub weeks (the $value count passed in) to the instance (using date interval). * @method $this subWeek() Sub one week to the instance (using date interval). * @method $this addWeekdays(int|float $value = 1) Add weekdays (the $value count passed in) to the instance (using date interval). * @method $this addWeekday() Add one weekday to the instance (using date interval). * @method $this subWeekdays(int|float $value = 1) Sub weekdays (the $value count passed in) to the instance (using date interval). * @method $this subWeekday() Sub one weekday to the instance (using date interval). * @method $this addUTCMicros(int|float $value = 1) Add microseconds (the $value count passed in) to the instance (using timestamp). * @method $this addUTCMicro() Add one microsecond to the instance (using timestamp). * @method $this subUTCMicros(int|float $value = 1) Sub microseconds (the $value count passed in) to the instance (using timestamp). * @method $this subUTCMicro() Sub one microsecond to the instance (using timestamp). * @method CarbonPeriod microsUntil($endDate = null, int|float $factor = 1) Return an iterable period from current date to given end (string, DateTime or Carbon instance) for each microsecond or every X microseconds if a factor is given. * @method float diffInUTCMicros(DateTimeInterface|string|null $date, bool $absolute = false) Convert current and given date in UTC timezone and return a floating number of microseconds. * @method $this addUTCMicroseconds(int|float $value = 1) Add microseconds (the $value count passed in) to the instance (using timestamp). * @method $this addUTCMicrosecond() Add one microsecond to the instance (using timestamp). * @method $this subUTCMicroseconds(int|float $value = 1) Sub microseconds (the $value count passed in) to the instance (using timestamp). * @method $this subUTCMicrosecond() Sub one microsecond to the instance (using timestamp). * @method CarbonPeriod microsecondsUntil($endDate = null, int|float $factor = 1) Return an iterable period from current date to given end (string, DateTime or Carbon instance) for each microsecond or every X microseconds if a factor is given. * @method float diffInUTCMicroseconds(DateTimeInterface|string|null $date, bool $absolute = false) Convert current and given date in UTC timezone and return a floating number of microseconds. * @method $this addUTCMillis(int|float $value = 1) Add milliseconds (the $value count passed in) to the instance (using timestamp). * @method $this addUTCMilli() Add one millisecond to the instance (using timestamp). * @method $this subUTCMillis(int|float $value = 1) Sub milliseconds (the $value count passed in) to the instance (using timestamp). * @method $this subUTCMilli() Sub one millisecond to the instance (using timestamp). * @method CarbonPeriod millisUntil($endDate = null, int|float $factor = 1) Return an iterable period from current date to given end (string, DateTime or Carbon instance) for each millisecond or every X milliseconds if a factor is given. * @method float diffInUTCMillis(DateTimeInterface|string|null $date, bool $absolute = false) Convert current and given date in UTC timezone and return a floating number of milliseconds. * @method $this addUTCMilliseconds(int|float $value = 1) Add milliseconds (the $value count passed in) to the instance (using timestamp). * @method $this addUTCMillisecond() Add one millisecond to the instance (using timestamp). * @method $this subUTCMilliseconds(int|float $value = 1) Sub milliseconds (the $value count passed in) to the instance (using timestamp). * @method $this subUTCMillisecond() Sub one millisecond to the instance (using timestamp). * @method CarbonPeriod millisecondsUntil($endDate = null, int|float $factor = 1) Return an iterable period from current date to given end (string, DateTime or Carbon instance) for each millisecond or every X milliseconds if a factor is given. * @method float diffInUTCMilliseconds(DateTimeInterface|string|null $date, bool $absolute = false) Convert current and given date in UTC timezone and return a floating number of milliseconds. * @method $this addUTCSeconds(int|float $value = 1) Add seconds (the $value count passed in) to the instance (using timestamp). * @method $this addUTCSecond() Add one second to the instance (using timestamp). * @method $this subUTCSeconds(int|float $value = 1) Sub seconds (the $value count passed in) to the instance (using timestamp). * @method $this subUTCSecond() Sub one second to the instance (using timestamp). * @method CarbonPeriod secondsUntil($endDate = null, int|float $factor = 1) Return an iterable period from current date to given end (string, DateTime or Carbon instance) for each second or every X seconds if a factor is given. * @method float diffInUTCSeconds(DateTimeInterface|string|null $date, bool $absolute = false) Convert current and given date in UTC timezone and return a floating number of seconds. * @method $this addUTCMinutes(int|float $value = 1) Add minutes (the $value count passed in) to the instance (using timestamp). * @method $this addUTCMinute() Add one minute to the instance (using timestamp). * @method $this subUTCMinutes(int|float $value = 1) Sub minutes (the $value count passed in) to the instance (using timestamp). * @method $this subUTCMinute() Sub one minute to the instance (using timestamp). * @method CarbonPeriod minutesUntil($endDate = null, int|float $factor = 1) Return an iterable period from current date to given end (string, DateTime or Carbon instance) for each minute or every X minutes if a factor is given. * @method float diffInUTCMinutes(DateTimeInterface|string|null $date, bool $absolute = false) Convert current and given date in UTC timezone and return a floating number of minutes. * @method $this addUTCHours(int|float $value = 1) Add hours (the $value count passed in) to the instance (using timestamp). * @method $this addUTCHour() Add one hour to the instance (using timestamp). * @method $this subUTCHours(int|float $value = 1) Sub hours (the $value count passed in) to the instance (using timestamp). * @method $this subUTCHour() Sub one hour to the instance (using timestamp). * @method CarbonPeriod hoursUntil($endDate = null, int|float $factor = 1) Return an iterable period from current date to given end (string, DateTime or Carbon instance) for each hour or every X hours if a factor is given. * @method float diffInUTCHours(DateTimeInterface|string|null $date, bool $absolute = false) Convert current and given date in UTC timezone and return a floating number of hours. * @method $this addUTCDays(int|float $value = 1) Add days (the $value count passed in) to the instance (using timestamp). * @method $this addUTCDay() Add one day to the instance (using timestamp). * @method $this subUTCDays(int|float $value = 1) Sub days (the $value count passed in) to the instance (using timestamp). * @method $this subUTCDay() Sub one day to the instance (using timestamp). * @method CarbonPeriod daysUntil($endDate = null, int|float $factor = 1) Return an iterable period from current date to given end (string, DateTime or Carbon instance) for each day or every X days if a factor is given. * @method float diffInUTCDays(DateTimeInterface|string|null $date, bool $absolute = false) Convert current and given date in UTC timezone and return a floating number of days. * @method $this addUTCWeeks(int|float $value = 1) Add weeks (the $value count passed in) to the instance (using timestamp). * @method $this addUTCWeek() Add one week to the instance (using timestamp). * @method $this subUTCWeeks(int|float $value = 1) Sub weeks (the $value count passed in) to the instance (using timestamp). * @method $this subUTCWeek() Sub one week to the instance (using timestamp). * @method CarbonPeriod weeksUntil($endDate = null, int|float $factor = 1) Return an iterable period from current date to given end (string, DateTime or Carbon instance) for each week or every X weeks if a factor is given. * @method float diffInUTCWeeks(DateTimeInterface|string|null $date, bool $absolute = false) Convert current and given date in UTC timezone and return a floating number of weeks. * @method $this addUTCMonths(int|float $value = 1) Add months (the $value count passed in) to the instance (using timestamp). * @method $this addUTCMonth() Add one month to the instance (using timestamp). * @method $this subUTCMonths(int|float $value = 1) Sub months (the $value count passed in) to the instance (using timestamp). * @method $this subUTCMonth() Sub one month to the instance (using timestamp). * @method CarbonPeriod monthsUntil($endDate = null, int|float $factor = 1) Return an iterable period from current date to given end (string, DateTime or Carbon instance) for each month or every X months if a factor is given. * @method float diffInUTCMonths(DateTimeInterface|string|null $date, bool $absolute = false) Convert current and given date in UTC timezone and return a floating number of months. * @method $this addUTCQuarters(int|float $value = 1) Add quarters (the $value count passed in) to the instance (using timestamp). * @method $this addUTCQuarter() Add one quarter to the instance (using timestamp). * @method $this subUTCQuarters(int|float $value = 1) Sub quarters (the $value count passed in) to the instance (using timestamp). * @method $this subUTCQuarter() Sub one quarter to the instance (using timestamp). * @method CarbonPeriod quartersUntil($endDate = null, int|float $factor = 1) Return an iterable period from current date to given end (string, DateTime or Carbon instance) for each quarter or every X quarters if a factor is given. * @method float diffInUTCQuarters(DateTimeInterface|string|null $date, bool $absolute = false) Convert current and given date in UTC timezone and return a floating number of quarters. * @method $this addUTCYears(int|float $value = 1) Add years (the $value count passed in) to the instance (using timestamp). * @method $this addUTCYear() Add one year to the instance (using timestamp). * @method $this subUTCYears(int|float $value = 1) Sub years (the $value count passed in) to the instance (using timestamp). * @method $this subUTCYear() Sub one year to the instance (using timestamp). * @method CarbonPeriod yearsUntil($endDate = null, int|float $factor = 1) Return an iterable period from current date to given end (string, DateTime or Carbon instance) for each year or every X years if a factor is given. * @method float diffInUTCYears(DateTimeInterface|string|null $date, bool $absolute = false) Convert current and given date in UTC timezone and return a floating number of years. * @method $this addUTCDecades(int|float $value = 1) Add decades (the $value count passed in) to the instance (using timestamp). * @method $this addUTCDecade() Add one decade to the instance (using timestamp). * @method $this subUTCDecades(int|float $value = 1) Sub decades (the $value count passed in) to the instance (using timestamp). * @method $this subUTCDecade() Sub one decade to the instance (using timestamp). * @method CarbonPeriod decadesUntil($endDate = null, int|float $factor = 1) Return an iterable period from current date to given end (string, DateTime or Carbon instance) for each decade or every X decades if a factor is given. * @method float diffInUTCDecades(DateTimeInterface|string|null $date, bool $absolute = false) Convert current and given date in UTC timezone and return a floating number of decades. * @method $this addUTCCenturies(int|float $value = 1) Add centuries (the $value count passed in) to the instance (using timestamp). * @method $this addUTCCentury() Add one century to the instance (using timestamp). * @method $this subUTCCenturies(int|float $value = 1) Sub centuries (the $value count passed in) to the instance (using timestamp). * @method $this subUTCCentury() Sub one century to the instance (using timestamp). * @method CarbonPeriod centuriesUntil($endDate = null, int|float $factor = 1) Return an iterable period from current date to given end (string, DateTime or Carbon instance) for each century or every X centuries if a factor is given. * @method float diffInUTCCenturies(DateTimeInterface|string|null $date, bool $absolute = false) Convert current and given date in UTC timezone and return a floating number of centuries. * @method $this addUTCMillennia(int|float $value = 1) Add millennia (the $value count passed in) to the instance (using timestamp). * @method $this addUTCMillennium() Add one millennium to the instance (using timestamp). * @method $this subUTCMillennia(int|float $value = 1) Sub millennia (the $value count passed in) to the instance (using timestamp). * @method $this subUTCMillennium() Sub one millennium to the instance (using timestamp). * @method CarbonPeriod millenniaUntil($endDate = null, int|float $factor = 1) Return an iterable period from current date to given end (string, DateTime or Carbon instance) for each millennium or every X millennia if a factor is given. * @method float diffInUTCMillennia(DateTimeInterface|string|null $date, bool $absolute = false) Convert current and given date in UTC timezone and return a floating number of millennia. * @method $this roundYear(float $precision = 1, string $function = "round") Round the current instance year with given precision using the given function. * @method $this roundYears(float $precision = 1, string $function = "round") Round the current instance year with given precision using the given function. * @method $this floorYear(float $precision = 1) Truncate the current instance year with given precision. * @method $this floorYears(float $precision = 1) Truncate the current instance year with given precision. * @method $this ceilYear(float $precision = 1) Ceil the current instance year with given precision. * @method $this ceilYears(float $precision = 1) Ceil the current instance year with given precision. * @method $this roundMonth(float $precision = 1, string $function = "round") Round the current instance month with given precision using the given function. * @method $this roundMonths(float $precision = 1, string $function = "round") Round the current instance month with given precision using the given function. * @method $this floorMonth(float $precision = 1) Truncate the current instance month with given precision. * @method $this floorMonths(float $precision = 1) Truncate the current instance month with given precision. * @method $this ceilMonth(float $precision = 1) Ceil the current instance month with given precision. * @method $this ceilMonths(float $precision = 1) Ceil the current instance month with given precision. * @method $this roundDay(float $precision = 1, string $function = "round") Round the current instance day with given precision using the given function. * @method $this roundDays(float $precision = 1, string $function = "round") Round the current instance day with given precision using the given function. * @method $this floorDay(float $precision = 1) Truncate the current instance day with given precision. * @method $this floorDays(float $precision = 1) Truncate the current instance day with given precision. * @method $this ceilDay(float $precision = 1) Ceil the current instance day with given precision. * @method $this ceilDays(float $precision = 1) Ceil the current instance day with given precision. * @method $this roundHour(float $precision = 1, string $function = "round") Round the current instance hour with given precision using the given function. * @method $this roundHours(float $precision = 1, string $function = "round") Round the current instance hour with given precision using the given function. * @method $this floorHour(float $precision = 1) Truncate the current instance hour with given precision. * @method $this floorHours(float $precision = 1) Truncate the current instance hour with given precision. * @method $this ceilHour(float $precision = 1) Ceil the current instance hour with given precision. * @method $this ceilHours(float $precision = 1) Ceil the current instance hour with given precision. * @method $this roundMinute(float $precision = 1, string $function = "round") Round the current instance minute with given precision using the given function. * @method $this roundMinutes(float $precision = 1, string $function = "round") Round the current instance minute with given precision using the given function. * @method $this floorMinute(float $precision = 1) Truncate the current instance minute with given precision. * @method $this floorMinutes(float $precision = 1) Truncate the current instance minute with given precision. * @method $this ceilMinute(float $precision = 1) Ceil the current instance minute with given precision. * @method $this ceilMinutes(float $precision = 1) Ceil the current instance minute with given precision. * @method $this roundSecond(float $precision = 1, string $function = "round") Round the current instance second with given precision using the given function. * @method $this roundSeconds(float $precision = 1, string $function = "round") Round the current instance second with given precision using the given function. * @method $this floorSecond(float $precision = 1) Truncate the current instance second with given precision. * @method $this floorSeconds(float $precision = 1) Truncate the current instance second with given precision. * @method $this ceilSecond(float $precision = 1) Ceil the current instance second with given precision. * @method $this ceilSeconds(float $precision = 1) Ceil the current instance second with given precision. * @method $this roundMillennium(float $precision = 1, string $function = "round") Round the current instance millennium with given precision using the given function. * @method $this roundMillennia(float $precision = 1, string $function = "round") Round the current instance millennium with given precision using the given function. * @method $this floorMillennium(float $precision = 1) Truncate the current instance millennium with given precision. * @method $this floorMillennia(float $precision = 1) Truncate the current instance millennium with given precision. * @method $this ceilMillennium(float $precision = 1) Ceil the current instance millennium with given precision. * @method $this ceilMillennia(float $precision = 1) Ceil the current instance millennium with given precision. * @method $this roundCentury(float $precision = 1, string $function = "round") Round the current instance century with given precision using the given function. * @method $this roundCenturies(float $precision = 1, string $function = "round") Round the current instance century with given precision using the given function. * @method $this floorCentury(float $precision = 1) Truncate the current instance century with given precision. * @method $this floorCenturies(float $precision = 1) Truncate the current instance century with given precision. * @method $this ceilCentury(float $precision = 1) Ceil the current instance century with given precision. * @method $this ceilCenturies(float $precision = 1) Ceil the current instance century with given precision. * @method $this roundDecade(float $precision = 1, string $function = "round") Round the current instance decade with given precision using the given function. * @method $this roundDecades(float $precision = 1, string $function = "round") Round the current instance decade with given precision using the given function. * @method $this floorDecade(float $precision = 1) Truncate the current instance decade with given precision. * @method $this floorDecades(float $precision = 1) Truncate the current instance decade with given precision. * @method $this ceilDecade(float $precision = 1) Ceil the current instance decade with given precision. * @method $this ceilDecades(float $precision = 1) Ceil the current instance decade with given precision. * @method $this roundQuarter(float $precision = 1, string $function = "round") Round the current instance quarter with given precision using the given function. * @method $this roundQuarters(float $precision = 1, string $function = "round") Round the current instance quarter with given precision using the given function. * @method $this floorQuarter(float $precision = 1) Truncate the current instance quarter with given precision. * @method $this floorQuarters(float $precision = 1) Truncate the current instance quarter with given precision. * @method $this ceilQuarter(float $precision = 1) Ceil the current instance quarter with given precision. * @method $this ceilQuarters(float $precision = 1) Ceil the current instance quarter with given precision. * @method $this roundMillisecond(float $precision = 1, string $function = "round") Round the current instance millisecond with given precision using the given function. * @method $this roundMilliseconds(float $precision = 1, string $function = "round") Round the current instance millisecond with given precision using the given function. * @method $this floorMillisecond(float $precision = 1) Truncate the current instance millisecond with given precision. * @method $this floorMilliseconds(float $precision = 1) Truncate the current instance millisecond with given precision. * @method $this ceilMillisecond(float $precision = 1) Ceil the current instance millisecond with given precision. * @method $this ceilMilliseconds(float $precision = 1) Ceil the current instance millisecond with given precision. * @method $this roundMicrosecond(float $precision = 1, string $function = "round") Round the current instance microsecond with given precision using the given function. * @method $this roundMicroseconds(float $precision = 1, string $function = "round") Round the current instance microsecond with given precision using the given function. * @method $this floorMicrosecond(float $precision = 1) Truncate the current instance microsecond with given precision. * @method $this floorMicroseconds(float $precision = 1) Truncate the current instance microsecond with given precision. * @method $this ceilMicrosecond(float $precision = 1) Ceil the current instance microsecond with given precision. * @method $this ceilMicroseconds(float $precision = 1) Ceil the current instance microsecond with given precision. * @method string shortAbsoluteDiffForHumans(DateTimeInterface $other = null, int $parts = 1) Get the difference (short format, 'Absolute' mode) in a human readable format in the current locale. ($other and $parts parameters can be swapped.) * @method string longAbsoluteDiffForHumans(DateTimeInterface $other = null, int $parts = 1) Get the difference (long format, 'Absolute' mode) in a human readable format in the current locale. ($other and $parts parameters can be swapped.) * @method string shortRelativeDiffForHumans(DateTimeInterface $other = null, int $parts = 1) Get the difference (short format, 'Relative' mode) in a human readable format in the current locale. ($other and $parts parameters can be swapped.) * @method string longRelativeDiffForHumans(DateTimeInterface $other = null, int $parts = 1) Get the difference (long format, 'Relative' mode) in a human readable format in the current locale. ($other and $parts parameters can be swapped.) * @method string shortRelativeToNowDiffForHumans(DateTimeInterface $other = null, int $parts = 1) Get the difference (short format, 'RelativeToNow' mode) in a human readable format in the current locale. ($other and $parts parameters can be swapped.) * @method string longRelativeToNowDiffForHumans(DateTimeInterface $other = null, int $parts = 1) Get the difference (long format, 'RelativeToNow' mode) in a human readable format in the current locale. ($other and $parts parameters can be swapped.) * @method string shortRelativeToOtherDiffForHumans(DateTimeInterface $other = null, int $parts = 1) Get the difference (short format, 'RelativeToOther' mode) in a human readable format in the current locale. ($other and $parts parameters can be swapped.) * @method string longRelativeToOtherDiffForHumans(DateTimeInterface $other = null, int $parts = 1) Get the difference (long format, 'RelativeToOther' mode) in a human readable format in the current locale. ($other and $parts parameters can be swapped.) * @method int centuriesInMillennium() Return the number of centuries contained in the current millennium * @method int|static centuryOfMillennium(?int $century = null) Return the value of the century starting from the beginning of the current millennium when called with no parameters, change the current century when called with an integer value * @method int|static dayOfCentury(?int $day = null) Return the value of the day starting from the beginning of the current century when called with no parameters, change the current day when called with an integer value * @method int|static dayOfDecade(?int $day = null) Return the value of the day starting from the beginning of the current decade when called with no parameters, change the current day when called with an integer value * @method int|static dayOfMillennium(?int $day = null) Return the value of the day starting from the beginning of the current millennium when called with no parameters, change the current day when called with an integer value * @method int|static dayOfMonth(?int $day = null) Return the value of the day starting from the beginning of the current month when called with no parameters, change the current day when called with an integer value * @method int|static dayOfQuarter(?int $day = null) Return the value of the day starting from the beginning of the current quarter when called with no parameters, change the current day when called with an integer value * @method int|static dayOfWeek(?int $day = null) Return the value of the day starting from the beginning of the current week when called with no parameters, change the current day when called with an integer value * @method int daysInCentury() Return the number of days contained in the current century * @method int daysInDecade() Return the number of days contained in the current decade * @method int daysInMillennium() Return the number of days contained in the current millennium * @method int daysInMonth() Return the number of days contained in the current month * @method int daysInQuarter() Return the number of days contained in the current quarter * @method int daysInWeek() Return the number of days contained in the current week * @method int daysInYear() Return the number of days contained in the current year * @method int|static decadeOfCentury(?int $decade = null) Return the value of the decade starting from the beginning of the current century when called with no parameters, change the current decade when called with an integer value * @method int|static decadeOfMillennium(?int $decade = null) Return the value of the decade starting from the beginning of the current millennium when called with no parameters, change the current decade when called with an integer value * @method int decadesInCentury() Return the number of decades contained in the current century * @method int decadesInMillennium() Return the number of decades contained in the current millennium * @method int|static hourOfCentury(?int $hour = null) Return the value of the hour starting from the beginning of the current century when called with no parameters, change the current hour when called with an integer value * @method int|static hourOfDay(?int $hour = null) Return the value of the hour starting from the beginning of the current day when called with no parameters, change the current hour when called with an integer value * @method int|static hourOfDecade(?int $hour = null) Return the value of the hour starting from the beginning of the current decade when called with no parameters, change the current hour when called with an integer value * @method int|static hourOfMillennium(?int $hour = null) Return the value of the hour starting from the beginning of the current millennium when called with no parameters, change the current hour when called with an integer value * @method int|static hourOfMonth(?int $hour = null) Return the value of the hour starting from the beginning of the current month when called with no parameters, change the current hour when called with an integer value * @method int|static hourOfQuarter(?int $hour = null) Return the value of the hour starting from the beginning of the current quarter when called with no parameters, change the current hour when called with an integer value * @method int|static hourOfWeek(?int $hour = null) Return the value of the hour starting from the beginning of the current week when called with no parameters, change the current hour when called with an integer value * @method int|static hourOfYear(?int $hour = null) Return the value of the hour starting from the beginning of the current year when called with no parameters, change the current hour when called with an integer value * @method int hoursInCentury() Return the number of hours contained in the current century * @method int hoursInDay() Return the number of hours contained in the current day * @method int hoursInDecade() Return the number of hours contained in the current decade * @method int hoursInMillennium() Return the number of hours contained in the current millennium * @method int hoursInMonth() Return the number of hours contained in the current month * @method int hoursInQuarter() Return the number of hours contained in the current quarter * @method int hoursInWeek() Return the number of hours contained in the current week * @method int hoursInYear() Return the number of hours contained in the current year * @method int|static microsecondOfCentury(?int $microsecond = null) Return the value of the microsecond starting from the beginning of the current century when called with no parameters, change the current microsecond when called with an integer value * @method int|static microsecondOfDay(?int $microsecond = null) Return the value of the microsecond starting from the beginning of the current day when called with no parameters, change the current microsecond when called with an integer value * @method int|static microsecondOfDecade(?int $microsecond = null) Return the value of the microsecond starting from the beginning of the current decade when called with no parameters, change the current microsecond when called with an integer value * @method int|static microsecondOfHour(?int $microsecond = null) Return the value of the microsecond starting from the beginning of the current hour when called with no parameters, change the current microsecond when called with an integer value * @method int|static microsecondOfMillennium(?int $microsecond = null) Return the value of the microsecond starting from the beginning of the current millennium when called with no parameters, change the current microsecond when called with an integer value * @method int|static microsecondOfMillisecond(?int $microsecond = null) Return the value of the microsecond starting from the beginning of the current millisecond when called with no parameters, change the current microsecond when called with an integer value * @method int|static microsecondOfMinute(?int $microsecond = null) Return the value of the microsecond starting from the beginning of the current minute when called with no parameters, change the current microsecond when called with an integer value * @method int|static microsecondOfMonth(?int $microsecond = null) Return the value of the microsecond starting from the beginning of the current month when called with no parameters, change the current microsecond when called with an integer value * @method int|static microsecondOfQuarter(?int $microsecond = null) Return the value of the microsecond starting from the beginning of the current quarter when called with no parameters, change the current microsecond when called with an integer value * @method int|static microsecondOfSecond(?int $microsecond = null) Return the value of the microsecond starting from the beginning of the current second when called with no parameters, change the current microsecond when called with an integer value * @method int|static microsecondOfWeek(?int $microsecond = null) Return the value of the microsecond starting from the beginning of the current week when called with no parameters, change the current microsecond when called with an integer value * @method int|static microsecondOfYear(?int $microsecond = null) Return the value of the microsecond starting from the beginning of the current year when called with no parameters, change the current microsecond when called with an integer value * @method int microsecondsInCentury() Return the number of microseconds contained in the current century * @method int microsecondsInDay() Return the number of microseconds contained in the current day * @method int microsecondsInDecade() Return the number of microseconds contained in the current decade * @method int microsecondsInHour() Return the number of microseconds contained in the current hour * @method int microsecondsInMillennium() Return the number of microseconds contained in the current millennium * @method int microsecondsInMillisecond() Return the number of microseconds contained in the current millisecond * @method int microsecondsInMinute() Return the number of microseconds contained in the current minute * @method int microsecondsInMonth() Return the number of microseconds contained in the current month * @method int microsecondsInQuarter() Return the number of microseconds contained in the current quarter * @method int microsecondsInSecond() Return the number of microseconds contained in the current second * @method int microsecondsInWeek() Return the number of microseconds contained in the current week * @method int microsecondsInYear() Return the number of microseconds contained in the current year * @method int|static millisecondOfCentury(?int $millisecond = null) Return the value of the millisecond starting from the beginning of the current century when called with no parameters, change the current millisecond when called with an integer value * @method int|static millisecondOfDay(?int $millisecond = null) Return the value of the millisecond starting from the beginning of the current day when called with no parameters, change the current millisecond when called with an integer value * @method int|static millisecondOfDecade(?int $millisecond = null) Return the value of the millisecond starting from the beginning of the current decade when called with no parameters, change the current millisecond when called with an integer value * @method int|static millisecondOfHour(?int $millisecond = null) Return the value of the millisecond starting from the beginning of the current hour when called with no parameters, change the current millisecond when called with an integer value * @method int|static millisecondOfMillennium(?int $millisecond = null) Return the value of the millisecond starting from the beginning of the current millennium when called with no parameters, change the current millisecond when called with an integer value * @method int|static millisecondOfMinute(?int $millisecond = null) Return the value of the millisecond starting from the beginning of the current minute when called with no parameters, change the current millisecond when called with an integer value * @method int|static millisecondOfMonth(?int $millisecond = null) Return the value of the millisecond starting from the beginning of the current month when called with no parameters, change the current millisecond when called with an integer value * @method int|static millisecondOfQuarter(?int $millisecond = null) Return the value of the millisecond starting from the beginning of the current quarter when called with no parameters, change the current millisecond when called with an integer value * @method int|static millisecondOfSecond(?int $millisecond = null) Return the value of the millisecond starting from the beginning of the current second when called with no parameters, change the current millisecond when called with an integer value * @method int|static millisecondOfWeek(?int $millisecond = null) Return the value of the millisecond starting from the beginning of the current week when called with no parameters, change the current millisecond when called with an integer value * @method int|static millisecondOfYear(?int $millisecond = null) Return the value of the millisecond starting from the beginning of the current year when called with no parameters, change the current millisecond when called with an integer value * @method int millisecondsInCentury() Return the number of milliseconds contained in the current century * @method int millisecondsInDay() Return the number of milliseconds contained in the current day * @method int millisecondsInDecade() Return the number of milliseconds contained in the current decade * @method int millisecondsInHour() Return the number of milliseconds contained in the current hour * @method int millisecondsInMillennium() Return the number of milliseconds contained in the current millennium * @method int millisecondsInMinute() Return the number of milliseconds contained in the current minute * @method int millisecondsInMonth() Return the number of milliseconds contained in the current month * @method int millisecondsInQuarter() Return the number of milliseconds contained in the current quarter * @method int millisecondsInSecond() Return the number of milliseconds contained in the current second * @method int millisecondsInWeek() Return the number of milliseconds contained in the current week * @method int millisecondsInYear() Return the number of milliseconds contained in the current year * @method int|static minuteOfCentury(?int $minute = null) Return the value of the minute starting from the beginning of the current century when called with no parameters, change the current minute when called with an integer value * @method int|static minuteOfDay(?int $minute = null) Return the value of the minute starting from the beginning of the current day when called with no parameters, change the current minute when called with an integer value * @method int|static minuteOfDecade(?int $minute = null) Return the value of the minute starting from the beginning of the current decade when called with no parameters, change the current minute when called with an integer value * @method int|static minuteOfHour(?int $minute = null) Return the value of the minute starting from the beginning of the current hour when called with no parameters, change the current minute when called with an integer value * @method int|static minuteOfMillennium(?int $minute = null) Return the value of the minute starting from the beginning of the current millennium when called with no parameters, change the current minute when called with an integer value * @method int|static minuteOfMonth(?int $minute = null) Return the value of the minute starting from the beginning of the current month when called with no parameters, change the current minute when called with an integer value * @method int|static minuteOfQuarter(?int $minute = null) Return the value of the minute starting from the beginning of the current quarter when called with no parameters, change the current minute when called with an integer value * @method int|static minuteOfWeek(?int $minute = null) Return the value of the minute starting from the beginning of the current week when called with no parameters, change the current minute when called with an integer value * @method int|static minuteOfYear(?int $minute = null) Return the value of the minute starting from the beginning of the current year when called with no parameters, change the current minute when called with an integer value * @method int minutesInCentury() Return the number of minutes contained in the current century * @method int minutesInDay() Return the number of minutes contained in the current day * @method int minutesInDecade() Return the number of minutes contained in the current decade * @method int minutesInHour() Return the number of minutes contained in the current hour * @method int minutesInMillennium() Return the number of minutes contained in the current millennium * @method int minutesInMonth() Return the number of minutes contained in the current month * @method int minutesInQuarter() Return the number of minutes contained in the current quarter * @method int minutesInWeek() Return the number of minutes contained in the current week * @method int minutesInYear() Return the number of minutes contained in the current year * @method int|static monthOfCentury(?int $month = null) Return the value of the month starting from the beginning of the current century when called with no parameters, change the current month when called with an integer value * @method int|static monthOfDecade(?int $month = null) Return the value of the month starting from the beginning of the current decade when called with no parameters, change the current month when called with an integer value * @method int|static monthOfMillennium(?int $month = null) Return the value of the month starting from the beginning of the current millennium when called with no parameters, change the current month when called with an integer value * @method int|static monthOfQuarter(?int $month = null) Return the value of the month starting from the beginning of the current quarter when called with no parameters, change the current month when called with an integer value * @method int|static monthOfYear(?int $month = null) Return the value of the month starting from the beginning of the current year when called with no parameters, change the current month when called with an integer value * @method int monthsInCentury() Return the number of months contained in the current century * @method int monthsInDecade() Return the number of months contained in the current decade * @method int monthsInMillennium() Return the number of months contained in the current millennium * @method int monthsInQuarter() Return the number of months contained in the current quarter * @method int monthsInYear() Return the number of months contained in the current year * @method int|static quarterOfCentury(?int $quarter = null) Return the value of the quarter starting from the beginning of the current century when called with no parameters, change the current quarter when called with an integer value * @method int|static quarterOfDecade(?int $quarter = null) Return the value of the quarter starting from the beginning of the current decade when called with no parameters, change the current quarter when called with an integer value * @method int|static quarterOfMillennium(?int $quarter = null) Return the value of the quarter starting from the beginning of the current millennium when called with no parameters, change the current quarter when called with an integer value * @method int|static quarterOfYear(?int $quarter = null) Return the value of the quarter starting from the beginning of the current year when called with no parameters, change the current quarter when called with an integer value * @method int quartersInCentury() Return the number of quarters contained in the current century * @method int quartersInDecade() Return the number of quarters contained in the current decade * @method int quartersInMillennium() Return the number of quarters contained in the current millennium * @method int quartersInYear() Return the number of quarters contained in the current year * @method int|static secondOfCentury(?int $second = null) Return the value of the second starting from the beginning of the current century when called with no parameters, change the current second when called with an integer value * @method int|static secondOfDay(?int $second = null) Return the value of the second starting from the beginning of the current day when called with no parameters, change the current second when called with an integer value * @method int|static secondOfDecade(?int $second = null) Return the value of the second starting from the beginning of the current decade when called with no parameters, change the current second when called with an integer value * @method int|static secondOfHour(?int $second = null) Return the value of the second starting from the beginning of the current hour when called with no parameters, change the current second when called with an integer value * @method int|static secondOfMillennium(?int $second = null) Return the value of the second starting from the beginning of the current millennium when called with no parameters, change the current second when called with an integer value * @method int|static secondOfMinute(?int $second = null) Return the value of the second starting from the beginning of the current minute when called with no parameters, change the current second when called with an integer value * @method int|static secondOfMonth(?int $second = null) Return the value of the second starting from the beginning of the current month when called with no parameters, change the current second when called with an integer value * @method int|static secondOfQuarter(?int $second = null) Return the value of the second starting from the beginning of the current quarter when called with no parameters, change the current second when called with an integer value * @method int|static secondOfWeek(?int $second = null) Return the value of the second starting from the beginning of the current week when called with no parameters, change the current second when called with an integer value * @method int|static secondOfYear(?int $second = null) Return the value of the second starting from the beginning of the current year when called with no parameters, change the current second when called with an integer value * @method int secondsInCentury() Return the number of seconds contained in the current century * @method int secondsInDay() Return the number of seconds contained in the current day * @method int secondsInDecade() Return the number of seconds contained in the current decade * @method int secondsInHour() Return the number of seconds contained in the current hour * @method int secondsInMillennium() Return the number of seconds contained in the current millennium * @method int secondsInMinute() Return the number of seconds contained in the current minute * @method int secondsInMonth() Return the number of seconds contained in the current month * @method int secondsInQuarter() Return the number of seconds contained in the current quarter * @method int secondsInWeek() Return the number of seconds contained in the current week * @method int secondsInYear() Return the number of seconds contained in the current year * @method int|static weekOfCentury(?int $week = null) Return the value of the week starting from the beginning of the current century when called with no parameters, change the current week when called with an integer value * @method int|static weekOfDecade(?int $week = null) Return the value of the week starting from the beginning of the current decade when called with no parameters, change the current week when called with an integer value * @method int|static weekOfMillennium(?int $week = null) Return the value of the week starting from the beginning of the current millennium when called with no parameters, change the current week when called with an integer value * @method int|static weekOfMonth(?int $week = null) Return the value of the week starting from the beginning of the current month when called with no parameters, change the current week when called with an integer value * @method int|static weekOfQuarter(?int $week = null) Return the value of the week starting from the beginning of the current quarter when called with no parameters, change the current week when called with an integer value * @method int|static weekOfYear(?int $week = null) Return the value of the week starting from the beginning of the current year when called with no parameters, change the current week when called with an integer value * @method int weeksInCentury() Return the number of weeks contained in the current century * @method int weeksInDecade() Return the number of weeks contained in the current decade * @method int weeksInMillennium() Return the number of weeks contained in the current millennium * @method int weeksInMonth() Return the number of weeks contained in the current month * @method int weeksInQuarter() Return the number of weeks contained in the current quarter * @method int|static yearOfCentury(?int $year = null) Return the value of the year starting from the beginning of the current century when called with no parameters, change the current year when called with an integer value * @method int|static yearOfDecade(?int $year = null) Return the value of the year starting from the beginning of the current decade when called with no parameters, change the current year when called with an integer value * @method int|static yearOfMillennium(?int $year = null) Return the value of the year starting from the beginning of the current millennium when called with no parameters, change the current year when called with an integer value * @method int yearsInCentury() Return the number of years contained in the current century * @method int yearsInDecade() Return the number of years contained in the current decade * @method int yearsInMillennium() Return the number of years contained in the current millennium * * */ class Carbon extends DateTime implements CarbonInterface { use Date; /** * Returns true if the current class/instance is mutable. */ public static function isMutable(): bool { return true; } }