Overview
- The month’s second full moon will occur on Sunday, May 31, 2026, at about 10:45 MESZ and is classed as a calendar "Blue Moon" because it is the second full moon in May.
- The full moon falls close to lunar apogee, with apogee recorded at about 406,366 km on June 1, 2026, producing a measurable "mini" or "micro" full moon.
- Precise measurements show the near-apogee Moon can appear roughly 7% smaller and about 15% dimmer than average, but those differences are not noticeable to the naked eye.
- The term "Blue Moon" refers to its calendar rarity rather than color and such second-full-month events happen on average every 2.5 to 3 years.
- Astrologers, including Jetteke van Lexmond of the Moonsisters, interpret this Blue Moon as marking the end of a long cycle as the Moon moves from Scorpio into Sagittarius, and advise reflection and letting go.