march31 --was glad to have shot this beauty---"Our March Blue Moon will also have something unusual associated with it: It will be a "Paschal" Moon.
Spring began on March 20, and 11 days later, the moon turns full. So this is also the first full moon of spring, and as such, it's designated as the Paschal Moon. The first Sunday after the Paschal Moon is usually designated as Easter Sunday, as will indeed be the case on the very next day, April 1.
But the ecclesiastical date assumed for the full moon may not coincide precisely with the astronomical one. So Easter, in practice, is determined from other formulas involving Epachs and Golden Numbers. These rules also state that the vernal equinox is fixed on March 21, even though, from Vatican City from 2008 through 2101, the equinox will occur no later than March 20. In 2038, Easter will be observed as late as it can possibly come, on April 25. The earliest date for Easter is March 22, which will not happen until 2285. The last time we had a Blue Paschal Moon was in 1999. In that year, that second March full moon fell on a Wednesday, so Easter Sunday fell on April 4. The next time we'll have a Paschal Blue Moon will be in 2037.
If you're wondering when the last time Easter Sunday fell on April 1 — that was in 1956.
But when did we have a case similar to this year, a Blue Paschal Moon on March 31, followed the very next day by Easter Sunday?
In 1714, the full moon was on March 31 at 3:17 Universal Time, followed the next day by Easter Sunday. But that was valid only for Europe and the Eastern Hemisphere. For the Western Hemisphere, the full moon occurred the day before (on March 30). For North America, we must go back to the year 1646 to have a case that replicates this month: a Blue Paschal Moon on Saturday, March 31, which was followed by Easter Sunday the very next day.
Incidentally, we're fully aware that the original colonies were still following the Julian calendar, and not the current Gregorian calendar, which was first implemented by Pope Gregory in 1582. England and the American colonies did not make the switch until 1752, --article from space.com #paschalmoon #bluemoon