Black Moon

What is a black moon?

  • A black moon is a little used term - so much so that it's hard to find a definitive definition. However it is most likely the second new moon in a month (oppisite of a blue moon). A list of dates of this definition can be found here.
  • The other possible definition is the absence of a full moon (OR new moon) in a single calendar month - which can only happen in February.This is because it is the only month which has less days than a lunar cycle, meaning if there is a full, or new, moon a day before February then it won't be back until February finishes. If February misses a full or new moon then it means two other months will each have two full or new moons. February will always have either one full moon or new moon - it will never be missing both