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
Chaula (month) Chaula (month) Chaulā (Nepal Bhasa: चौला) is the sixth month in the Nepal Era calendar, the national lunar calendar of Nepal. The month coincides with Chaitra (चैत्र) in the Hindu lunar calendar and April in the Gregorian calendar. Chaulā begins with the new moon and the full moon falls on the 15th of the lunar month. The month is divided into the bright and dark fortnights which are known as Chaulā Thaw (चौला थ्व) and Chaulā Gā (चौला गा) respectively. One of the major events that occur during this month is Jana Baha Dyah Jatra, the chariot festival of the