As the Moon moves through the sky it transits through each zodiac
sign in turn, changing signs every two and a half days. Within each
sign, it makes various aspects to other planets and celestial bodies; at
a certain point, it will make the last aspect in that particular sign.
You can think of aspects as being a relationship between two energies;
until the Moon enters the next sign it is not connected to any other
Astrologers refer to this as a "Void of Course