The Moon makes a complete circle through the twelve signs every 28.5 days and spends approximately 2.5 days in each sign.
There is a time, however, when this connection is not complete and it "float" between signs. This is the time we call the void-of-course Moon. It starts after the Moon has made its last major aspect (conjunction, trine, square, opposition, or sextile) to the Sun or another planet and it has yet to change signs. So the Moon is considered void-of-course until it enters the next sign.
The Moon goes void-of-course every two days or so, and this can last anywhere from a few minutes to a day or two. Most commonly seen is the void-of-course Moon lasting several hours.
What does that mean for you?
There is a certain quality to the energy during a void-of-course Moon. It is as if everything slows down and the ability to make a clear decision is at a halt. Think of it as if you are floating in space just like the Moon. You are not yet ready to commit to a sign and need more time to feel it out. Apply that thought to the moments when the Moon is void-of-course.
Examples of things to avoid (if possible) during the Void-of-Course Moon:
Examples of ways to use the Void-of-Course Moon to your advantage:
Here is an example of the lunar cycle for February 2019 from Mountain Astrologer magazine. You would read it as follows:
On January 31st the Moon enters Capricorn at 4:47pm (Pacific time). It will then square Uranus before going void-of-course on February 3rd at 2:53am (Pacific time). It will remain void-of-course until it enters (ingresses) into Aquarius on February 3rd at 5:03am (Pacific time). So in this instance, the Moon would be void-of-course for a total of 2 hours and 10 minutes.