Proleptic Gregorian calendar Proleptic Gregorian calendar The proleptic Gregorian calendar is produced by extending the Gregorian calendar backward to dates preceding its official introduction in 1582. In countries that adopted the Gregorian calendar later, dates occurring in the interim (between 1582 and the local adoption) are sometimes "Gregorianized" as well. For example, George Washington was born on February 11, 1731 (Old Style), as Great Britain and its possessions were using the Julian calendar with English years starting on March 25 until September 1752. After the switch, that day became February 22, 1732, which is the date commonly given as Washington's birthday. The proleptic
Bachhala (month) Avalokiteśvara, begins at Patan on the 4th day of the bright fortnight. The full moon day of Baisākh Purnimā (वैसाख पुर्णिमा) is one of the year's most widely celebrated holidays. It is known as Swānyā Punhi (स्वांया पुन्हि) in Nepal Bhasa and means "Full Moon Day of Flowers". The holiday celebrates three events in the Buddha's life—his birth, enlightenment and Nirvana. Bachhala (month) Bachhalā (Nepal Bhasa: बछला) is the seventh month in the Nepal Era calendar, the national lunar calendar of Nepal. The month coincides with Vaisakha (वैसाख) in the Hindu lunar calendar and May in the Gregorian calendar. Bachhalā