| Hijri Month | Starts On | Day of Week | Days in Month |
|---|---|---|---|
| Muharram 635 | 24-August-1237 | Monday | 29 days. |
| Safar 635 | 22-September-1237 | Tuesday | 30 days. |
| Rabi Al-Awwal 635 | 22-October-1237 | Thursday | 30 days. |
| Rabi Al-Thani 635 | 21-November-1237 | Saturday | 30 days. |
| Jumada Al-Awwal 635 | 21-December-1237 | Monday | 29 days. |
| Jumada Al-Thani 635 | 19-January-1238 | Tuesday | 30 days. |
| Rajab 635 | 18-February-1238 | Thursday | 29 days. |
| Shaban 635 | 19-March-1238 | Friday | 30 days. |
| Ramadan 635 | 18-April-1238 | Sunday | 29 days. |
| Shawwal 635 | 17-May-1238 | Monday | 29 days. |
| Dhu Al-Qidah 635 | 15-June-1238 | Tuesday | 30 days. |
| Dhu Al-Hijjah 635 | 15-July-1238 | Thursday | 29 days. |