| Hijri Month | Starts On | Day of Week | Days in Month |
|---|---|---|---|
| Muharram 641 | 20-June-1243 | Saturday | 30 days. |
| Safar 641 | 20-July-1243 | Monday | 30 days. |
| Rabi Al-Awwal 641 | 19-August-1243 | Wednesday | 29 days. |
| Rabi Al-Thani 641 | 17-September-1243 | Thursday | 30 days. |
| Jumada Al-Awwal 641 | 17-October-1243 | Saturday | 29 days. |
| Jumada Al-Thani 641 | 15-November-1243 | Sunday | 30 days. |
| Rajab 641 | 15-December-1243 | Tuesday | 29 days. |
| Shaban 641 | 13-January-1244 | Wednesday | 29 days. |
| Ramadan 641 | 11-February-1244 | Thursday | 30 days. |
| Shawwal 641 | 12-March-1244 | Saturday | 29 days. |
| Dhu Al-Qidah 641 | 10-April-1244 | Sunday | 30 days. |
| Dhu Al-Hijjah 641 | 10-May-1244 | Tuesday | 29 days. |