(PHP 5 >= 5.5.0, PHP 7, PHP 8)
IntlGregorianCalendar::getGregorianChange — Get the Gregorian Calendar change date
Stile orientato agli oggetti
Stile procedurale
Gets the Gregorian Calendar change date. This is the point at which the calendar switches from Julian dates to Gregorian dates, expressed as a Unix timestamp in milliseconds. It defaults to midnight (UTC) on October 15, 1582.
calendarAn IntlGregorianCalendar instance.
Returns the change date.