Based on the used calendar new years are often categorized between lunar or lunisolar new years or solar new years. See more

January
• January 1: The first day of the civil year in the Gregorian calendar used by most countries See more

During the Roman Republic and the Roman Empire, years began on the date on which each consul first entered the office. This was probably May 1 before 222 BC, March 15 from 222 BC to 154 BC, and January 1 from 153 BC. In 45 BC, when Julius Caesar's … See more

• Assyrian New Year – Assyrian New Year
• Aztec New Year
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The early development of the Christian liturgical year coincided with the Roman Empire (east and west), and later the Byzantine Empire, both of which employed a taxation system … See more

It took quite a long time before January 1 again became the universal or standard start of the civil year. The years of adoption of January 1 as the new year are as follows: See more

Because of the division of the globe into time zones, the new year moves progressively around the globe as the start of the day ushers in … See more