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
Mountains of the Moon (Africa) not until modern times that Europeans resumed their search for the source of the Nile. The Scottish explorer, James Bruce, who travelled to Gojjam, Ethiopia, in 1770, investigated the source of the Blue Nile there. He identified the "Mountains of the Moon" with Mount Amedamit, which he described surrounded the source of the Lesser Abay "in two semi-circles like a new moon ... and seem, by their shape, to deserve the name of mountains of the moon, such as was given by antiquity to mountains in the neighborhood of which the Nile was supposed to rise." James Grant and John