A second full moon in a calendar month will occur on May 31 and be best seen at moonrise on May 30. Why is the Blue Moon one of astronomy’s most misunderstood terms?

Add Yahoo as a preferred source to see more of our stories on Google. May 31, 2026 at 4:43 a.m. ET brings us a rare Blue Moon—the second full Moon occurring within a single calendar month—making this ...

The second full moon of May — a blue moon — will make an appearance this weekend.

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. The so-called Blue Moon rose at dusk on Saturday, May 30, ...

India, May 30 -- Skywatchers are in for a celestial treat as May 2026 is going to end with one of the year's most fascinating lunar events. It is a rare Blue Moon that also happens to be a micromoon.