Black Moon Months 🌑

Because the lunar cycle is approximately 29.5 days, it is occasionally possible for February—which has only 28 or 29 days—to pass without a single full moon. This phenomenon is known as a Black Moon.

Between 1900 and 2100, the years without a full moon in February are:

– 1915
– 1934
– 1961
– 1999
– 2018
– 2037 (Next occurrence)
– 2094

The Metonic Cycle: This event typically occurs once every 19 years but not always due to leap years.

Double Blue Moons: Years with no full moon in February are almost always marked by having two full moons in both January and March (a “Double Blue Moon” year).

Time Zone Sensitivity: Because a full moon occurs at a specific global instant, a year might lack a full moon in one time zone (like the Americas) while still having one in another (like Europe or Asia).

Leap Year Rarity: It is extremely rare for a leap year (29 days) to miss a full moon; the last time was in 1608, and it won’t happen again until 2572.