Is it possible to come 30 february in history?
February 30 occurs in some calendars, but not in the Gregorian calendar, where February contains only 28 or 29 days. Swedish calendar Swedish calendar February 1712 The Swedish Empire (which included Finland at the time) planned to change from the Julian calendar to the Gregorian calendar beginning in 1700 by omitting leap days for the next 40 years. Although the leap day was omitted in February 1700, the Great Northern War began later that year, diverting the attention of the Swedes from their calendar so they did not omit leap days on the next two occasions, causing 1704 and 1708 to remain leap years. To avoid confusion and further mistakes, the Julian calendar was restored when, in 1712, one extra leap day was added, thus giving that year a 30th of February. That date corresponded to February 29 in the Julian calendar and to March 11 in the Gregorian calendar. The Swedish changeover to the Gregorian calendar was finally accomplished in 1753 by omitting the last eleven days of Februa
