Why is Easter never on the same day?

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Tags

1. #occurs
2. #occur
3. #vernal
4. #first
5. #easter
6. #later
7. #rules
8. #ecclesiastical
9. #actual
10. #resulting
11. #statement
12. #usual
13. #never
14. #precise
15. #march
16. #april
17. #sunday
18. #after
19. #equinox
20. #before