The adoption of the Gregorian Calendar has taken place in the history of most cultures and societies around the world, marking a change from one of various traditional dating systems to the contemporary system – the Gregorian Calendar – which is widely used around the world today. Some polities adopted the new calendar in 1582, others not before the early twentieth century, and others at various dates between. A few have yet to do so, but except for these, the Gregorian Calendar is now the universal civil calendar, yet old style calendars remain in use in religious or traditional contexts. During – and for some time after – the transition between systems, it has been common to use the terms "Old Style" and "New Style" in dating to indicate which calendar was used to reckon them.
Adoption of the Gregorian calendar begins, eventually leading to near-universal adoption.
On October 15, in the year 1582, Adoption of the Gregorian calendar begins, eventually leading to near-universal adoption. This event is recorded as a Historical Events event in the history of October 15, one of 403 recorded events on this date across all of history.
Key Facts
- This event took place on October 15, 1582 (AD era).
- It is categorised as a Historical Events event in recorded history.
- Referenced in 1 Wikipedia article.
- Wikipedia source last updated on 27 September 2026.
On This Date in History 403
This article draws on content from Wikipedia, available under CC BY-SA 4.0.
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