| Hijri Month | Starts On | Day of Week | Days in Month |
|---|---|---|---|
| Muharram 643 | 29-May-1245 | Monday | 29 days. |
| Safar 643 | 27-Jun-1245 | Tuesday | 30 days. |
| Rabi al-awwal 643 | 27-Jul-1245 | Thursday | 30 days. |
| Rabi al-thani 643 | 26-Aug-1245 | Saturday | 30 days. |
| Jumada al-awwal 643 | 25-Sep-1245 | Monday | 29 days. |
| Jumada al-thani 643 | 24-Oct-1245 | Tuesday | 30 days. |
| Rajab 643 | 23-Nov-1245 | Thursday | 29 days. |
| Shaban 643 | 22-Dec-1245 | Friday | 30 days. |
| Ramadan 643 | 21-Jan-1246 | Sunday | 29 days. |
| Shawwal 643 | 19-Feb-1246 | Monday | 30 days. |
| Dhu al-Qidah 643 | 21-Mar-1246 | Wednesday | 29 days. |
| Dhu al-Hijjah 643 | 19-Apr-1246 | Thursday | 29 days. |