Islamic Hijri Calendar For 641 CE
| Western Month | Converts To Hijri Month |
|---|
| Jan 641 | Muharram, 20 |
| Feb 641 | Safar, 20 |
| Mar 641 | Rabi al-awwal, 20 |
| Apr 641 | Rabi al-thani, 20 |
| May 641 | Jumada al-awwal, 20 |
| Jun 641 | Jumada al-thani, 20 |
| Jul 641 | Rajab, 20 |
| Aug 641 | Shaban, 20 |
| Sep 641 | Ramadan, 20 |
| Oct 641 | Shawwal, 20 |
| Nov 641 | Dhu al-Qidah, 20 |
| Dec 641 | Dhu al-Hijjah, 20 |