Millennium: | 1st millennium |
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Centuries: | 1st century BC – 1st century – 2nd century |
Decades: | 0s BC 0s 10s – 20s – 30s 40s 50s |
Years: | 18 19 20 – 21 – 22 23 24 |
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21 is a year in the 1st century. It was a common year starting on Wednesday of the Julian calendar. At the time, it was known as the Year of the Consulship of Augustus and Caesar. view more...