Islamic Hijri Calendar For 638 CE
| Western Month | Converts To Hijri Month |
|---|
| Jan 638 | Dhu al-Hijjah, 16 |
| Feb 638 | Muharram, 17 |
| Mar 638 | Safar, 17 |
| Apr 638 | Rabi al-awwal, 17 |
| May 638 | Rabi al-thani, 17 |
| Jun 638 | Jumada al-awwal, 17 |
| Jul 638 | Jumada al-thani, 17 |
| Aug 638 | Rajab, 17 |
| Sep 638 | Shaban, 17 |
| Oct 638 | Ramadan, 17 |
| Nov 638 | Shawwal, 17 |
| Dec 638 | Dhu al-Qidah, 17 |