History of New Year Celebrations The earliest known New Year celebrations were in Mesopotamia and date back to 2000 BC. The early Romans used March 1 as New Year's Day. Other cultures used the autumn equinox or the winter solstice to mark the new year. In 1582, the Gregorian calendar, which marks January 1 as the new year, is adopted by the Roman Catholic Church. New Year - … [Read more...] about Starting the New Year