Look up for a blue moon on May 31
A blue moon will occur on May 31, 2026, marking the second full moon of the month. This event is known as a calendrical blue moon, which happens approximately every 2.5 years. Additionally, this blue moon will be classified as a micromoon, appearing smaller due to its increased distance from Earth.
- ▪The blue moon will reach peak illumination at 4:46 a.m. EDT on May 31.
- ▪Calendrical blue moons occur when there are two full moons in a single calendar month.
- ▪This month's blue moon will be 252,360 miles away from Earth, making it a micromoon.
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A ‘Super Blue moon’ rose in the skies of the Dutch city of Nijmegen during the night from August 31st to September 1st, 2023. Photo by Romy Arroyo Fernandez/NurPhoto via Getty Images Get the Popular Science daily newsletter💡 Breakthroughs, discoveries, and DIY tips sent six days a week. Email address Sign up Thank you! By signing up, you confirm you are 16+, will receive newsletters and promotional content and agree to our Terms of Use and acknowledge the data practices in our Privacy Policy. You may unsubscribe at any time. This weekend, Earth will be treated to a nice blue moon. Our planet’s only natural satellite won’t put on a pleasant azure hue (indeed, blue moons have nothing to do with color).
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