The first day of the Gregorian calendar year — globally observed.
New Year's Day on January 1 marks the start of the Gregorian calendar year. While the date is secular, it has been a public holiday in most countries since the Gregorian calendar was widely adopted in the 16th-17th centuries. In some Christian traditions it is also the Feast of the Circumcision of Christ or the Solemnity of Mary, Mother of God.
Computed for Les Ulis (Europe/Paris) using local sunrise, sunset and astronomical positions.
Other observances and vrats falling in January 2027, with dates computed for Les Ulis.
See every observance, vrat and ekadashi computed precisely for Les Ulis — or pick a different city.
A more detailed account of New Year's Day in Les Ulis — its mythology, regional variations, and rituals — is being prepared.