Void-of-Course Moon Calendar

Monthly calculated UTC tables for 2026 and 2027, with a customizable free calculator.

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Browse a year below. Each monthly table identifies the Moon’s last exact major aspect in a sign, the following ingress, and the elapsed void period. Times are calculated independently; the accompanying guide explains the convention and limitations.

What “void of course” means here

For each passage through a tropical zodiac sign, we find the Moon’s last exact major aspect to the Sun, Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune, or Pluto. The interval begins at that aspect and ends when the Moon enters the next sign. The included angles are conjunction, sextile, square, trine, and opposition. If no listed aspect occurs during a sign passage, the interval begins at the sign ingress. Other astrological traditions use different bodies or definitions.

Times use apparent geocentric tropical ecliptic longitudes from the local Astronomy Engine and are rounded to the nearest minute in UTC. A local civil date may be different. These times describe a symbolic timing convention; they cannot predict whether a plan will succeed.