HEGIRA

, a term in Chronology, signifying the epoch, or account of time, used by the Mahomedans, who begin their computation from the day that Mahomet was forced to make his escape from the city of Mecca, which happened on Friday the 16th of July 622.

The years of the Hegira are lunar ones, consisting only of 354 days. Hence, to reduce these years to the Julian calendar, that is, to find what Julian year a given year of the Hegira answers to: reduce the year of the Hegira into days, by multiplping by 354, divide the product by 365 1/4, and to the quotient add 622, the year the Hegira commenced.