जब February में थे 30 दिन | 30 Day In February | Amazing Things About Months

Описание: February 30 (or 30 February) occurs on some calendars but not the Gregorian calendar, where the month of February contains only 28 days, or 29 days in a leap year. 30 February/February 30 is usually used as a sarcastic date for referring to something that will never happen or will never be done. February 31 may also be used in such a fashion.

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Swedish calendar:
Instead of changing from the Julian calendar to the Gregorian calendar by omitting a block of consecutive days, as had been done in other countries, the Swedish Empire planned to change gradually by omitting all leap days from 1700 to 1740, inclusive. 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 that they did not omit leap days on the next two occasions; 1704 and 1708 remained leap years.

To avoid confusion and further mistakes, the Julian calendar was restored in 1712 by adding an extra leap day, thus giving that year the only known actual use of February 30 in a calendar. That day corresponded to February 29 in the Julian calendar and to March 11 in the Gregorian calendar.

The Swedish conversion to the Gregorian calendar was finally accomplished in 1753, when February 17 was followed by March 1.

Soviet calendar:
Although many sources erroneously state that 30-day months were used in the Soviet Union for part or all of the period from 1929 to 1940, the Soviet calendar with 5- and 6-day weeks was used only for assigning workdays and days of rest in factories. The traditional calendar remained for everyday use: surviving physical calendars from that period show only the irregular months of the Gregorian calendar, including a 28- or 29-day February, so there was never a February 30 in the Soviet Union.

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