You can use this link to go forward or backward in time for Moon phase information. If you are curious, you can even find out what phase the Moon was in when you or anyone else was born.
The Moon’s current phase for today and tonight is a Last Quarter phase. This phase occurs roughly 3 weeks after the New Moon when the Moon is three quarter of the way through it’s orbit around the earth. If you live in the northern hemisphere the Moons left side will be illuminated and the right side will be dark. For those of you in the southern hemisphere it will be the opposite with the right side illuminated. Also called a Third Quarter phase, it will rise around midnight on the eastern horizon and set in the west around noon the next day. In the days following the Third Quarter Phase the Moon’s illumination will decrees each day until the New Moon.
Visit the May 2023 Moon Phases Calendar to see all the daily moon phase for this month.
Today’s Last Quarter Phase
The Last Quarter on May 12 has an illumination of 51%. This is the percentage of the Moon illuminated by the Sun. The illumination is constantly changing and can vary up to 10% a day. On May 12 the Moon is 22.03 days old. This refers to how many days it has been since the last New Moon. It takes 29.53 days for the Moon to orbit the Earth and go through the lunar cycle of all 8 Moon phases.
Moon Age: 22.03 days
Moon Angle: 0.55
Moon Distance: 363,395.13 km
Sun Angle: 0.53
Sun Distance: 151,143,948.49 km
The 8 Lunar Phases
There are 8 lunar phases the Moon goes through in its 29.53 days lunar cycle. The 4 major Moon phases are Full Moon, New Moon, First Quarter and Last Quarter. Between these major phases, there are 4 minor ones: the Waxing Crescent, Waxing Gibbous, Waning Gibbous and Waning Crescent. For more info on the Moon Cycle and on each phase check out Wikipedia Lunar Phase page.
Useful Moon Resources
Check the weather before a night of Moon gazing at weather.com
For a list of all the current meteor showers visit American Meteor Society