| Hijri Month | Starts On | Day of Week | Days in Month |
|---|---|---|---|
| Muharram 644 | 18-May-1246 | Friday | 30 days. |
| Safar 644 | 17-Jun-1246 | Sunday | 29 days. |
| Rabi al-awwal 644 | 16-Jul-1246 | Monday | 30 days. |
| Rabi al-thani 644 | 15-Aug-1246 | Wednesday | 30 days. |
| Jumada al-awwal 644 | 14-Sep-1246 | Friday | 29 days. |
| Jumada al-thani 644 | 13-Oct-1246 | Saturday | 30 days. |
| Rajab 644 | 12-Nov-1246 | Monday | 30 days. |
| Shaban 644 | 12-Dec-1246 | Wednesday | 29 days. |
| Ramadan 644 | 10-Jan-1247 | Thursday | 30 days. |
| Shawwal 644 | 9-Feb-1247 | Saturday | 29 days. |
| Dhu al-Qidah 644 | 10-Mar-1247 | Sunday | 30 days. |
| Dhu al-Hijjah 644 | 9-Apr-1247 | Tuesday | 29 days. |