Black moon years. When February is without full moon, then the preceding January or December and the following March or April have two full moons. As with the case of two new moons in a month, whether a black moon by this definition occurs depends on the time zone. Calculated in UTC, instances of a month without full moon between 1990 and 2040 are: Another use of the term is for the absence of the new moon in a calendar month. This can occur only in February; it happens about every 19 years. When February is without new moon, then the preceding
The Moon is made of green cheese this morphology is grouped as "The Wolf Dives into the Water for Reflected Cheese" (Type 34) of the Aarne–Thompson classification of folktales, where the Moon's reflection is mistaken for cheese, in the section devoted to tales of The Clever Fox. It can also be grouped as "The Moon in the Well" (Type 1335A), in the section devoted to Stories about a Fool, referring to stories where the simpleton believes the Moon itself is a tangible object in the water. "The Moon is made of green cheese" was one of the most popular proverbs in 16th and 17th-century English literature, and