At a glance
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In time
Summary
In the year 16, Umar ibn al-Khattab (may God be pleased with him) set the dating of the calendar on the advice of Ali ibn Abi Talib (may God be pleased with him). The start of the Islamic calendar was made the Prophet ﷺ's migration from Mecca to Medina, the dating by which the community still works. 1.
Connections
- Occurred at
- Madinat al-Mubarak
- Had participant
- Umar ibn al-Khattab· Ali ibn Abi Talib
People and things also explored
Abu Sufyan's mission to Medina· Ali's counsel in Umar's judgments· Ali enters Kufa in 36 AH· After Badr: the dead, the captives, the spoils, and the news in Mecca and Medina· The Battle of Badr· Battle of Nahavand· The Death of Abu Bakr al-Siddiq· The death and burial of Fatima bint Muhammad
Sources
- al-Kamil fi'l-Tarikh of Ibn al-Athir , p. 351
Cite this page
islam.museum contributors. “'Umar institutes the Hijri calendar (16 AH)”. islam.museum, https://islam.museum/en/event/hijri-calendar-decree/. CC BY-SA 4.0. Last updated 2026-10-21.