For the first time since 1956, Easter falls on April Fools’ Day (April 1). In the 21st century, the two holidays will only line up three times, with all three of them being before the halfway point of the century – 2050. The next expected dates are 2029 and 2040.

The exact origin of April Fools’ Day is undetermined, but many historians date it back to 1563 when the calendar switched from Julian to Gregorian (because some people didn’t know about the calendar switch, it gave people something to joke about).

Each year, Easter falls on the first ecclesiastical full moon that occurs after March 21. According to EarthSky.org, there are 35 possibilities on which Easter can take place. The earliest day is March 22, which hasn’t happened since 1818.

“I had no idea Easter and April Fool’s were going to be on the same day, but it’s kind of cool that they ended up like that this year,” junior Jeannie Ruiz said.