History of new year
The new year is thought to have originated in ancient Babylon some 4,000 years ago, in the year 2,000 BC. The Babylonians celebrated the new year with an 11-day celebration called Akitu, which included a different rite on each of the days, on the first new moon after the vernal equinox (typically around late March). The festival commemorated the fabled victory of the sky deity Marduk over sea goddess Tiamat, as well as the act of crowning a new monarch or permitting the previous king to rule.
Why do we celebrate New Year’s on January 1?
The early Roman calendar became out of sync with the sun over the years, and in 46 BC, emperor Julius Caesar resolved to fix the problem by contacting the most important astronomers and mathematicians of the period. He established the Julian calendar, which is very similar to the more current Gregorian calendar used by most countries today.
Caesar made January 1 the first day of the year as part of his reforms, partially to commemorate the month’s namesake, Janus, the Roman deity of beginnings. Romans commemorated Janus’ birthday by presenting sacrifices to him, exchanging presents, decorating their homes with laurel branches, and throwing wild celebrations. Christian authorities in mediaeval Europe temporarily supplanted January 1 as the beginning day of the year with days with greater religious significance, such as December 25 (the birth anniversary of Jesus) and March 25 (the Feast of the Annunciation). In 1582, Pope Gregory XIII reestablished January 1 as New Year’s Day.
We can partly thank the Roman king Numa Pompilius. According to tradition, during his reign (c. 715–673 BCE) Numa revised the Roman republican calendar so that January replaced March as the first month. It was a fitting choice, since January was named after Janus, the Roman god of all beginnings; March celebrated Mars, the god of war. (Some sources claim that Numa also created the month of January.) However, there is evidence that January 1 was not made the official start of the Roman year until 153 BCE.
In 46 BCE Julius Caesar introduced more changes, though the Julian calendar, as it became known, retained January 1 as the year’s opening date. With the expansion of the Roman Empire, the use of the Julian calendar also spread. However, following the fall of Rome in the 5th century CE, many Christian countries altered the calendar so that it was more reflective of their religion, and March 25 (the Feast of the Annunciation) and December 25 (Christmas) became common New Year’s Days.
It later became clear that the Julian calendar required additional changes due to a miscalculation concerning leap years. The cumulative effect of this error over the course of several centuries caused various events to take place in the wrong season. It also created problems when determining the date of Easter. Thus, Pope Gregory XIII introduced a revised calendar in 1582. In addition to solving the issue with leap years, the Gregorian calendar restored January 1 as the start of the New Year. While Italy, France, and Spain were among the countries that immediately accepted the new calendar, Protestant and Orthodox nations were slow to adopt it. Great Britain and its American colonies did not begin following the Gregorian calendar until 1752. Before then they celebrated New Year’s Day on March 25.
Over time non-Christian countries also began to use the Gregorian calendar. China (1912) is a notable example, though it continued to celebrate the Chinese New Year according to a lunar calendar. In fact, many countries that follow the Gregorian calendar also have other traditional or religious calendars. Some nations never adopted the Gregorian calendar and thus start the year on dates other than January 1. Ethiopia, for example, celebrates its New Year (known as Enkutatash) in September.