What is the hejira and the date ?

Answer 1

Noun 1. Hejira - the flight of Muhammad from Mecca to Medina in 622 which marked the beginning of the Muslim era; the Muslim calendar begins in that year
Hegira
escape, flight - the act of escaping physically; "he made his escape from the mental hospital"; "the canary escaped from its cage"; "his flight was an indication of his guilt"
2. hejira - a journey by a large group to escape from a hostile environment
exodus, hegira
escape, flight - the act of escaping physically; "he made his escape from the mental hospital"; "the canary escaped from its cage"; "his flight was an indication of his guilt"