Western Month	Converts To Hijri Month
Jan 640	Muharram, 19
Feb 640	Safar, 19
Mar 640	Rabi al-awwal, 19
Apr 640	Rabi al-thani, 19
May 640	Jumada al-awwal, 19
Jun 640	Jumada al-thani, 19
Jul 640	Rajab, 19
Aug 640	Shaban, 19
Sep 640	Ramadan, 19
Oct 640	Shawwal, 19
Nov 640	Dhu al-Qidah, 19
Dec 640	Dhu al-Hijjah, 19