First Full Moon After Spring Equinox 2024. The first new moon after the autumn equinox will be on wednesday october 2. Usually, a full moon arrives a few days to weeks before or after the equinox.

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. The paschal full moon is significant because it determines which date easter falls on each year.