Rabi Al-Thani 18 — Hijri to Gregorian
| Hijri Day | Hijri Month & Year | Western Date | Day of Week |
|---|---|---|---|
| 1 | Rabi Al-Thani, 18 | 13-April-639 | Saturday |
| 2 | Rabi Al-Thani, 18 | 14-April-639 | Sunday |
| 3 | Rabi Al-Thani, 18 | 15-April-639 | Monday |
| 4 | Rabi Al-Thani, 18 | 16-April-639 | Tuesday |
| 5 | Rabi Al-Thani, 18 | 17-April-639 | Wednesday |
| 6 | Rabi Al-Thani, 18 | 18-April-639 | Thursday |
| 7 | Rabi Al-Thani, 18 | 19-April-639 | Friday |
| 8 | Rabi Al-Thani, 18 | 20-April-639 | Saturday |
| 9 | Rabi Al-Thani, 18 | 21-April-639 | Sunday |
| 10 | Rabi Al-Thani, 18 | 22-April-639 | Monday |
| 11 | Rabi Al-Thani, 18 | 23-April-639 | Tuesday |
| 12 | Rabi Al-Thani, 18 | 24-April-639 | Wednesday |
| 13 | Rabi Al-Thani, 18 | 25-April-639 | Thursday |
| 14 | Rabi Al-Thani, 18 | 26-April-639 | Friday |
| 15 | Rabi Al-Thani, 18 | 27-April-639 | Saturday |
| 16 | Rabi Al-Thani, 18 | 28-April-639 | Sunday |
| 17 | Rabi Al-Thani, 18 | 29-April-639 | Monday |
| 18 | Rabi Al-Thani, 18 | 30-April-639 | Tuesday |
| 19 | Rabi Al-Thani, 18 | 1-May-639 | Wednesday |
| 20 | Rabi Al-Thani, 18 | 2-May-639 | Thursday |
| 21 | Rabi Al-Thani, 18 | 3-May-639 | Friday |
| 22 | Rabi Al-Thani, 18 | 4-May-639 | Saturday |
| 23 | Rabi Al-Thani, 18 | 5-May-639 | Sunday |
| 24 | Rabi Al-Thani, 18 | 6-May-639 | Monday |
| 25 | Rabi Al-Thani, 18 | 7-May-639 | Tuesday |
| 26 | Rabi Al-Thani, 18 | 8-May-639 | Wednesday |
| 27 | Rabi Al-Thani, 18 | 9-May-639 | Thursday |
| 28 | Rabi Al-Thani, 18 | 10-May-639 | Friday |
| 29 | Rabi Al-Thani, 18 | 11-May-639 | Saturday |
Baseline: Tabular (Kuwaiti) Hijri. Local moon-sighting may vary ±1 day.