The blue moon is a celestial phenomenon that occurs when there are two full moons in a calendar month. ... The next true blue moon will be May 31, 2026, according to fullmoonology.com.

The next monthly Blue Moon is on May 31, 2026, according to Time and Date. The next seasonal blue moon will be on Aug. 21, 2032. ... Full moon calendar 2025: When to see the next full moon.

A monthly Blue Moon is the second full moon of a calendar month with two full moons. The next monthly Blue Moon will happen on May 31, 2026, according to Time and Date .

On the rare occasion we get two full moons in the month it's called a 'blue moon' — hence, the saying 'once in a blue moon.' The next one will occur on May 31, 2026. When is the next full moon ...

Full moons will appear at about mid-month at the start of 2025, but will creep forward in the calendar with each passing month. (Eventually, we'll get two full moons in May 2026, aka a "blue moon.") ...