History II / The Making of an Islamic World
Practice question · Numerical answer

In which year did the Hijra, the migration from Mecca to Medina that begins the Islamic calendar, take place?

Hints
  1. It is a decade before Muhammad’s death in 632.
  2. Six hundred and twenty-two.
Show the answer

622

Why

622, which is year 1 AH. The calendar is lunar, so Islamic years run about eleven days shorter than solar ones and the two counts drift apart, a common source of arithmetic errors when converting between them.

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