| Hijri Month | Starts On | Day of Week | Days in Month |
|---|---|---|---|
| Muharram 642 | 8-Jun-1244 | Wednesday | 30 days. |
| Safar 642 | 8-Jul-1244 | Friday | 30 days. |
| Rabi al-awwal 642 | 7-Aug-1244 | Sunday | 30 days. |
| Rabi al-thani 642 | 6-Sep-1244 | Tuesday | 30 days. |
| Jumada al-awwal 642 | 6-Oct-1244 | Thursday | 29 days. |
| Jumada al-thani 642 | 4-Nov-1244 | Friday | 29 days. |
| Rajab 642 | 3-Dec-1244 | Saturday | 30 days. |
| Shaban 642 | 2-Jan-1245 | Monday | 29 days. |
| Ramadan 642 | 31-Jan-1245 | Tuesday | 29 days. |
| Shawwal 642 | 1-Mar-1245 | Wednesday | 30 days. |
| Dhu al-Qidah 642 | 31-Mar-1245 | Friday | 29 days. |
| Dhu al-Hijjah 642 | 29-Apr-1245 | Saturday | 30 days. |