What is Moon Void of Course ?

A Void-of-Course transit of the moon is a period of time between the last aspect of the Moon while transiting in one sign and the point that the Moon enters the next sign (ingress).

The Moon or any planet is "void of course" when it makes no major Ptolemaic aspects before leaving its sign. Firmicus Maternus refers to the void of course planet as traveling in an aspect vacuum. The five major aspects used to make this judgement are Ptolemy's conjunction, sextile, square, opposition and trine. There will be approximately 13 Void Moon periods per month. The Void can last from a few minutes to several hours, depending on the placements of the planets.

The Void-of-Course (VOC) is similar to a short-lived rest or a recuperation period for the Moon before it starts on its next emotional path into the fresh astrological sign. The Moon’s transit through a sign sets the stage for our feelings. In addition, the aspects that it makes to the planets while transiting a sign tends to put a quick "spotlight" of focus to those feelings.