Overview
- The blue moon reached peak fullness at about 4:45 a.m. EDT on Sunday, May 31, as reported by the Farmer's Almanac and multiple outlets.
- NASA measured the Moon near apogee at roughly 252,334 miles (≈406,093 km), calling it the farthest, smallest and dimmest full moon of 2026.
- Observers were advised to watch moonrise at dusk on the night of May 30 for the most dramatic views, though regional weather varied and some areas, like parts of the UK, saw patchy clouds.
- A calendrical blue moon is the second full moon in a calendar month and this one also qualified as a micromoon because apogee made it about 6–7% smaller in apparent diameter than an average full moon.
- The event generated worldwide photos and livestreams, the next calendar blue moon will be on December 31, 2028, and the same blue‑micromoon coincidence is not expected to recur until about 2053.