Russians in the temporarily occupied territories of Ukraine are trying to suppress the celebration of Christmas according to the New Julian calendar, which is celebrated on December 24 and 25 ...

A calendar notation in which the date is represented by one number. For example, the Julian date for December 11, 1942 is 2430705; while December 12, 1942 is 2430706. The Julian date is widely ...

At least, that was the idea. Revolutionary as the Julian calendar was, it wasn't perfect, and fell out of alignment over time. In 1582, Pope Gregory XIII introduced the Gregorian calendar ...