Void-of-Course Moon: What It Means and What to Avoid
The eight phases on the Moon Phase Today page are visual — how much of the Moon’s face is lit, which you can see just by looking up. Void-of-course is a different kind of moon tracking entirely: it’s not about what the Moon looks like, but about its astrological relationship to the other planets at a given moment.
What “void-of-course” Means
As the Moon travels through a zodiac sign, it forms a series of connections — astrologers call them aspects — with other planets. At some point before the Moon crosses into the next sign, it makes its last major aspect for that sign. The stretch between that last aspect and the actual sign change is the void-of-course period: astrologically, the Moon is considered "unanchored" during this window, not actively connecting to anything else in the sky.
How long it lasts
This varies a lot — anywhere from a few minutes to well over a day, depending on how close the Moon’s last aspect happens to fall to the actual sign change. There’s no fixed schedule the way there is with the eight visual phases; it has to be calculated from the specific positions of the planets on a given day.
What's traditionally best avoided — and what's fine
The traditional guidance is specifically about starting things, not about the day being "bad." Avoid launching anything you want to stick: signing a contract, starting a new job, a big purchase, an important first meeting, or a major decision. Things started void-of-course have a reputation for fizzling, needing to be redone, or simply not going anywhere — not a disaster, just wasted momentum.
On the other hand, plenty is considered fine — even favored — during a void Moon: rest, routine chores, reflection, journaling, finishing something already in motion, or low-stakes errands. If it doesn’t need momentum behind it, the void doesn’t really work against you.
How to check if the Moon is void right now
You cannot see void-of-course by looking at the Moon, because it has to be calculated from where the planets are. Today’s Sky shows it in the Moon box, both when the Moon is void and when it is about to become void within a day. Here, void of course means the Moon makes no more exact angles to the Sun, Mercury, Venus, Mars, Jupiter or Saturn before it changes sign. Some astrologers also count Uranus, Neptune and Pluto, so a dedicated astrological calendar may show a slightly different window.