21

Also known as 774 AUC, 21 AD

year

AI overview

I don't have enough context to write an accurate overview. You've indicated the context is "year," but "21" could refer to multiple things associated with years or the number 21 (such as the card-counting film, a book, an age of adulthood, etc.). Could you clarify what "21" refers to?

AI-generated from the Wikipedia summary — may contain errors.

Wikidata facts

Instance of: year
Part of: 20s
Followed by: 22
Follows: 20

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Commons category: 21
topic's main category: Category:21
point in time: 0021-01-01
different from: 21
has list: list of state leaders in 21
category for births in this time period: Category:21 births
category for deaths in this time period: Category:21 deaths

Sources (2)

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Encyclopedic overview

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AD 21 (XXI) was a common year starting on Wednesday of the Julian calendar. At the time, it was known as the Year of the Consulship of Tiberius and Drusus (or, less frequently, year 774 Ab urbe condita). The denomination AD 21 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

Excerpted from Wikipedia’s “21” article, available under the CC BY-SA 4.0 licence.