05/30/2026
A rare full blue moon peaks this weekend! 🌕 But it will appear mostly full tonight and Sunday night too.
PEAK: 4:45AM EDT SUNDAY MAY 31
The fullest night will be Saturday night into Sunday morning. The moon will be 99% full the night before and the night after, which is really hard to tell the difference.
I always like to look at the moon the night before peak because it rises earlier in the evening.
MOON RISE TIMES
▪️Friday: 8PM EDT
▪️Saturday: 9PM EDT
▪️Sunday: 10PM EDT
Look in the eastern sky.
WHY BLUE MOON?
We like to say “once in a blue moon” for something that happens rarely. There are two definitions:
🌕Original definition: During a 3-month period, if there was going to be a 4 full moons, the 3rd one would be called a blue moon. This would help farmers stay on track during the planting and harvest seasons.
🌕Most commonly used definition now: 2nd full moon in a single month.
For this blue moon, it’s the 2nd full moon of May 2026. This happens once every 2-3 years