The History of New Year's Day

The first New Year: Babylon's Akitu festival

The earliest recorded New Year celebrations come from ancient Mesopotamia. In Babylon, the new year began in spring, in the month of Nisannu, around the time of the vernal equinox and the barley harvest. That timing made sense to farmers: the year started when the land came back to life.

The festival was called Akitu, and it lasted about 12 days. Records of Akitu-type festivals go back to the Sumerian period, and the Babylonian version became closely tied to the god Marduk. Statues of the gods were carried in procession, the creation epic was recited, and the king took part in a striking ritual: he was stripped of his royal regalia and struck by the high priest, then had his authority renewed. The message was clear. A new year meant a renewal of order between the gods, the king and the people.

Akitu is a useful reminder that the idea of a new year was never purely about counting days. From the start it carried religious, political and seasonal meaning, a pattern that keeps repeating through history.

Other ancient new years

Babylon was far from the only culture with its own start date. The ancient Egyptians tied their year to the annual flooding of the Nile, which lined up with the rising of the star Sirius. Many cultures used lunar or lunisolar calendars, which is why festivals like Lunar New Year, Rosh Hashanah and Nowruz still move around the Western calendar or follow the seasons rather than January 1.

What most early calendars share is a link to nature: harvests, floods, equinoxes and moons. A new year in the dead of winter, as we have now, is actually the unusual choice, and it came from Rome.

Rome, Janus and the move to January

The earliest Roman calendar is said to have had only ten months and began in March, which is why September, October, November and December still carry the Latin words for seven, eight, nine and ten. Roman tradition credits the second king, Numa Pompilius, with adding January and February.

January took its name from Janus, the Roman god of beginnings, gates, doorways and transitions. Janus was shown with two faces, one looking back at the past and one looking forward to the future. You couldn't design a better mascot for a new year if you tried.

Politics helped too. From 153 BC, Rome's two consuls, the highest elected officials, began their terms on January 1, and Romans dated years by the names of the consuls in office. So January 1 was already the start of the civil year in a practical sense, even while the calendar itself was a mess.

Julius Caesar and the calendar of 46 BC

By the middle of the first century BC, the Roman calendar had drifted badly out of line with the seasons. It relied on officials adding extra months when needed, and that system was open to neglect and political meddling.

Julius Caesar fixed it. Advised by the astronomer Sosigenes of Alexandria, he introduced a solar calendar of 365 days with an extra day every fourth year. To realign the calendar with the sun, 46 BC was stretched to 445 days, which is why it's sometimes called the "year of confusion." The new Julian calendar took effect in 45 BC, and it confirmed January 1 as the first day of the year.

Romans marked the day by exchanging good wishes, giving small gifts such as honey, figs and dates, and making offerings to Janus. Some of that spirit, sweet foods and kind words for a good year, still shows up in New Year customs today.

The Middle Ages: a year with many birthdays

After the fall of the Western Roman Empire, January 1 lost its grip. Church leaders in medieval Europe were uneasy about the pagan revelry tied to the Roman New Year, and many regions moved the start of the year to dates with Christian meaning.

Depending on where and when you lived, the year might begin on December 25 (Christmas), March 25 (the Feast of the Annunciation, also called Lady Day), or Easter, which moved every year. England used March 25 for legal purposes for centuries. That meant a document dated February 1700 in England could belong to what we would now call 1701, a headache historians still deal with.

Even so, many people kept treating January 1 informally as New Year's Day, exchanging gifts and greetings, because the Julian calendar still listed it as the first day of January.

1582: Pope Gregory XIII and the Gregorian calendar

The Julian calendar had a small flaw. Its average year of 365.25 days was about 11 minutes longer than the solar year. Over centuries those minutes piled up, and by the 1500s the calendar was roughly ten days out of step with the equinoxes, which mattered to the Church because it threw off the date of Easter.

In 1582, Pope Gregory XIII issued a reform. Ten days were dropped, so in the countries that adopted it immediately, Thursday, October 4, 1582 was followed by Friday, October 15. The leap year rule was also tweaked: century years would only be leap years if divisible by 400. That's why 2000 had a February 29 but 1900 did not. The Gregorian calendar also restored January 1 as the start of the year.

Catholic countries such as Spain, Portugal and the Italian states switched first. Protestant and Orthodox countries took much longer. Scotland moved its New Year to January 1 in 1600. England and its American colonies only followed in 1752, when Parliament's Calendar Act both adopted the Gregorian calendar and moved New Year's Day from March 25 to January 1. Some Orthodox churches still use the Julian calendar for religious dates today.

Why we celebrate on January 1 today

So why January 1? It comes down to Rome. The date honors Janus, it matched the start of the Roman consuls' terms, Julius Caesar made it official in his calendar, and the Gregorian reform that most of the world now uses for civil life kept it. As trade, travel and later global communication spread the Gregorian calendar, January 1 became the shared starting line for most countries.

That doesn't mean everyone stops there. Billions of people also celebrate Lunar New Year, Rosh Hashanah, Nowruz, Diwali-linked new years and many others. But when the ball drops in Times Square or fireworks light up Sydney Harbour, the countdown is to a date set more than 2,000 years ago by a Roman general with a calendar problem.