The word moon (Qamar), together with its derivatives, is used exactly 27 times in the Quran. This number is equal to the number the moon completes its ecliptic cycle; 27 days. The Quran indicates that both the sun and the moon follow courses exactly computed (55-Gracious, 5). The sun’s and the moon’s definition in terms of mathematics is interesting and the word “moon” is mathematically coded in the Quran. The list of the occurrences of the word “moon” is given below.
| The word | Number of occurrences |
| Moon | 27 |
| How long does the moon’s ecliptic cycle take? | 27 |
| No | Verse |
| 1. | 6:77 |
| 2. | 6:96 |
| 3. | 7:54 |
| 4. | 10:5 |
| 5. | 12:4 |
| 6. | 13:2 |
| 7. | 14:33 |
| 8. | 16:12 |
| 9. | 21:33 |
| 10. | 22:18 |
| 11. | 25:61 |
| 12. | 29:61 |
| 13. | 31:29 |
| 14. | 35:13 |
| 15. | 36:39 |
| 16. | 36:40 |
| 17. | 39:5 |
| 18. | 41:37 |
| 19. | 41:37 |
| 20. | 54.1 |
| 21. | 55:5 |
| 22. | 71:16 |
| 23. | 74:32 |
| 24. | 75:8 |
| 25. | 75:9 |
| 26. | 84:18 |
| 27. | 91:2 |