21 AH
From Wikipedia, the free encyclopedia
21 AH is a year in the Islamic calendar that corresponds to 641 – 642 CE.
| Centuries: | 1st century BH · 1st century AH · 2nd century AH |
| Decades: | 10s BH 0s AH 10s AH 20s AH 30s AH 40s AH 50s AH |
| Years: | 18 AH 19 AH 20 AH 21 AH 22 AH 23 AH 24 AH |
