Although the Russian Soviet Federative Socialist Republic officially adopted the Gregorian calendar in 1918, the Russian Orthodox Church continued to use the Julian calendar. The New Year became a holiday which is celebrated by both calendars.
As in most countries which use the Gregorian calendar, New Year's Day in Russia is a public holiday celebrated on January 1. On that day, joyous entertainment, fireworks, elaborate and often large meals and other festivities are common. The holiday is interesting as it combines secular traditions of bringing in the New Year with the Christian Orthodox Christmastide customs, such as koleda.
The New Year by the Julian calendar is still informally observed, and the tradition of celebrating the coming of the New Year twice is widely enjoyed: January 1 (New New Year) and January 14 (Old New Year).
Usually not as festive as the New New Year, for many this is a nostalgic family holiday ending the New Year holiday cycle (which includes Eastern Orthodox Christmas on January 7) with traditional large meals, singing and celebratory drinking.[1]