Western Calendar Conversion
Converts between the Western Julian and Gregorian calendars.
・The Julian calendar was used through October 4, AD 1582, but the Gregorian calendar was adopted starting on October 15, AD 1582.
・The calculation method of the Julian calendar (inserting a leap year every 4 years) was historically established only from the year 8 onward.
・The timing of its adoption varied by country and region; Japan was the first in Asia to adopt it, redesignating December 3 of Meiji 5 as January 1, Meiji 6 (1873).
・The calculation method of the Julian calendar (inserting a leap year every 4 years) was historically established only from the year 8 onward.
・The timing of its adoption varied by country and region; Japan was the first in Asia to adopt it, redesignating December 3 of Meiji 5 as January 1, Meiji 6 (1873).
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