The short answer is that Easter is a movable feast, tied to the cycles of the moon. While your birthday or Christmas is locked into a calendar date, Easter hops around like a rabbit in a field. It always falls on the first Sunday after the first full moon that occurs on or after the spring equinox, which is around March 21st.
Imagine trying to plan a big family dinner where the date depends on when the moon looks perfectly round. That’s exactly what early Christian leaders did back in 325 A.D., and we’ve been following their lunar logic ever since. So, yes, we are all still planning our brunch around a celestial body—how wonderfully old-school is that?
The Lunar Calendar: Your Cosmic Dinner Bell
Think of the spring equinox as the official starting gun for spring. Then, picture the moon as a show-off that gets fully dressed up on random nights. Easter is simply the Sunday just after that big, bright, full moon makes its entrance. This is why the date can bounce anywhere between March 22nd and April 25th.
It’s like waiting for a friend who says, “I’ll come over right after the next full moon.” You have no idea if that’s next week or next month! That’s the playful, frustrating, and charming chaos of Easter. It’s a reminder that our human schedules still bow to the ancient rhythms of the sky, even if we use smartphone calendars now.