Islamic Hijri Calendar For 640 CE
| Western Month | Converts To Hijri Month |
|---|
| January 640 | Muharram, 19 |
| February 640 | Safar, 19 |
| March 640 | Rabi Al-Awwal, 19 |
| April 640 | Rabi Al-Thani, 19 |
| May 640 | Jumada Al-Awwal, 19 |
| June 640 | Jumada Al-Thani, 19 |
| July 640 | Rajab, 19 |
| August 640 | Shaban, 19 |
| September 640 | Ramadan, 19 |
| October 640 | Shawwal, 19 |
| November 640 | Dhu Al-Qidah, 19 |
| December 640 | Dhu Al-Hijjah, 19 |
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