Easter and the Paschal Full Moon (2024)

Easter occurs on the first Sunday after the “paschal full Moon.” In simple terms, this is the first full Moon immediately following the vernal (spring) equinox. However, that’s not the full story because Easter isn’t based on the actual Moon or equinox date!We’ll explain the curious connection between the Moon andEaster.

How Does Easter Relate to the FullMoon?

Easter is what’s known as a “movable feast”—in other words, areligious holiday that may fallon a different calendar datefrom year to year.

→See our Easter holiday page to learn more about Easter’s date, Easter traditions, recipes, and more.

The date of Easter is tied to the relationship between the Paschal Full Moon, whose dates are based on calculations made long ago, and the Church’s fixed date of theMarch equinox(also called the spring or vernal equinox in the Northern Hemisphere), which is March 21.Thanks to this, determining when Easter will be can getmore thana bitconfusing because of the occasional differences between these ecclesiastical dates and the astronomicaldates.

Here’s a basic rule of thumb for finding thedate:

“Easter is observed on the Sunday following the first full Moon that occurs on or after the March equinox.” Occasionally, the Church’s dates will not coincide with the astronomical dates, in which case this basic rule would notapply.

For example, if the equinox were to occur on March 21 and the full Moon were to occur two days later, on March 23, Easter would be observed on the first Sunday after March23.

However, thanks to the motions of our planetand the Moon, as well as the inelasticity of calendars, calculating Easter’s date canget more complicated sometimes!Read on to learnmore…

A Difference ofDates

The biggest cause of confusion regarding Easter is the tangled web of dates that are used to determine the holiday. If you take the rule given above at face value, things don’t always work out quiteright.

This is exactly what happened in 2019. The March equinox occurred on March 20 at 5:58 P.M. EDT, with the full Moon reaching its peakfour hours later, at 9:43 P.M. EDT. But wait—that means that the full Moon and the March equinox happened on the same date, which should have landed Easter on Sunday, March 24, right? Well, notquite.

The dates of the full Moon and the Marchequinox that are used to calculate Easter are not the astronomical dates of these events, but rather the ecclesiastical dates.

• The astronomical dates of the full Moon and the March equinox are the actual, scientifically determined dates of these events. For example, the equinox occurs at the exact moment when the Sun crosses Earth’s equator, when day and night are approximately equal. Similarly, the full Moon occurs when the Moon reaches peak illumination by theSun.
• The ecclesiastical dates of the full Moon and the March equinox are those used by the Christian Church. They were defined long ago in order to aid in the calculation of Easter’s date, which means thatthey may differ from the astronomical dates of theseevents.

In A.D. 325, a full Moon calendar was created that did not take into account all the factors of lunar motion that we know about today.The Christian Church still follows this calendar, which means that the date of the ecclesiastical full Moon may be one or two days off from the date of the astronomical fullMoon.

Additionally, the astronomical date of the equinox changes over time, but the Church has fixed the event in its calendar to March 21. This means that the ecclesiastical date of the equinox will always be March 21, even if the astronomical date is March 19 or20.

Due to these rules, in 2019, the ecclesiastical full Moonoccurred before the ecclesiastical Vernal Equinox, which meant that Easter would not be observed until after the next full Moon (the Paschal Full Moon)in mid-April. Thus, Easter was celebratedon Sunday, April 21,2019.

Fun Fact:“Paschal” stems from Pascha, the Greek and Latin word for Passover.

When Is the Paschal Full Moon in2024?

Technically, the Paschal Full Moon occurs on the 14th day of the lunar month that occurs on or after March 21, according to ecclesiastical calculations using the Metonic cycle. But in many cases, it coincides with the astronomical full Moon on or after the actual Marchequinox.

Using the astronomical dates for 2024, the vernal equinox in the Northern Hemisphere occurs on Tuesday, March 19. The first full Moon to occur after that equinox date is March’s Full Worm Moon, which reaches peak illumination on Monday, March 25, at 3:00 A.M. Eastern Time. According to this general guideline, this makes March’s full Moon the Paschal Full Moon, and therefore, Easter will be observed on the first Sunday after March 25: Sunday, March31!

How Late Can EasterBe?

For the Western Christian churches and others that use the Gregorian calendar for their calculations, Easter can occur as early as March 22 and as late as April25.

For the Eastern Orthodox churches and others that use the Julian calendar for their calculations, the observance can occur between April 4 and May 8 in the Gregoriancalendar.

→ Learn more about how tocalculate the date of Easter.

Which Full Moon is Nearest toEaster?

The full Moon nearest to Easter can change. Sometimes, it’s the full Moon that occurs in March, and sometimes it’s the full Moon that occurs inApril.

In 2024, March’s full Moon (March 25) will be nearest to Easter (March31).

→ See more information about March’s Full WormMoon.

2024 Moon WallCalendar

Want to enjoy the beautiful Moon year-round? Check out our Moon Wall Calendar here!