Religion / idea · concept

Islamic calendar

Also known as Islamic lunar calendar

The Islamic calendar is a lunar calendar of twelve months, dating its years from the Hijra of the Prophet Muhammad in 622 CE. It was introduced as an official dating system under the caliph Umar. Its adoption was part of the governance of the Rashidun Caliphate.

Islamic calendar
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Mentioned in 2 profiles

Rashidun CaliphateGovernanceIslamOrigins, Summary

Mentioned in 1 state history

Islamic state of Medina

See also

Cite this entry
APA
The Epoch Institute. (2026). Islamic calendar. In The Epoch Institute Encyclopedia. https://the-epoch-institute.org/encyclopedia/islamic-calendar
MLA
“Islamic calendar.” The Epoch Institute Encyclopedia, The Epoch Institute, 2026, https://the-epoch-institute.org/encyclopedia/islamic-calendar. Accessed .
Chicago
The Epoch Institute. “Islamic calendar.” The Epoch Institute Encyclopedia. 2026. https://the-epoch-institute.org/encyclopedia/islamic-calendar.
Harvard
The Epoch Institute (2026) ‘Islamic calendar’, The Epoch Institute Encyclopedia. Available at: https://the-epoch-institute.org/encyclopedia/islamic-calendar (Accessed: ).

Last reviewed October 2026Random entry ↻