New Year festival, any of the social, cultural, and religious observances worldwide that celebrate the beginning of the new year. Such festivals are among the oldest and the most universally observed.
The earliest known record of a New Year festival dates from about 2000 BCE in Mesopotamia, where in Babylonia the new year (Akitu) began with the new moon after the spring equinox (mid-March) and in Assyria with the new moon nearest the autumn equinox (mid-September). For the Egyptians, Phoenicians, and Persians the year began with the autumn equinox (September 21), and for the early Greeks it began with the winter solstice (December 21). On the Roman republican calendar the year began on March 1, but after 153 BCE the official date was January 1, which was continued in the Julian calendar of 46 BCE.
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