Black Moon dates and meaning
Compare monthly, seasonal and no-new-Moon-in-month Black Moon rules, using calendar boundaries in your time zone.
Next dates under your selected rule
| Event | Local time | Details |
|---|---|---|
| Monthly | 31 August 2027 at 18:41 BST | Second new Moon in a month |
| Seasonal | 20 August 2028 at 11:44 BST | Third of four in a season |
| Month without new Moon | 2033-02 | Europe/London |
2026 Black Moons
No Black Moon under the selected rule occurs in 2026 in Europe/London.
Monthly Black Moon means the second new Moon in one local calendar month. Seasonal Black Moon means the third new Moon in an astronomical season containing four. A third usage names a month with no new Moon, which can occur in February. These are different naming rules.