| Hijri Month | Starts On | Day of Week | Days in Month |
|---|---|---|---|
| Muharram 491 | 8-Dec-1097 | Tuesday | 30 days. |
| Safar 491 | 7-Jan-1098 | Thursday | 30 days. |
| Rabi al-awwal 491 | 6-Feb-1098 | Saturday | 29 days. |
| Rabi al-thani 491 | 7-Mar-1098 | Sunday | 30 days. |
| Jumada al-awwal 491 | 6-Apr-1098 | Tuesday | 29 days. |
| Jumada al-thani 491 | 5-May-1098 | Wednesday | 30 days. |
| Rajab 491 | 4-Jun-1098 | Friday | 29 days. |
| Shaban 491 | 3-Jul-1098 | Saturday | 30 days. |
| Ramadan 491 | 2-Aug-1098 | Monday | 29 days. |
| Shawwal 491 | 31-Aug-1098 | Tuesday | 29 days. |
| Dhu al-Qidah 491 | 29-Sep-1098 | Wednesday | 30 days. |
| Dhu al-Hijjah 491 | 29-Oct-1098 | Friday | 29 days. |