Today the Moon will be in a Waxing Gibbous phase. This phase is when the moon is more than 50% illuminated but not yet a Full Moon. The phase lasts round 7 days with the moon becoming more illuminated each day until the Full Moon. During a Waxing Gibbous the moon will rise in the east in mid-afternoon and will be high in the eastern sky at sunset. The moon is then visible though most of the night sky setting a few hour before sunrise. The word Gibbous first appeared in the 14th century and has its roots in the Latin word “gibbosus” meaning humpbacked.
Waxing Gibbous Phase
The Waxing Gibbous Moon on August 1 has an illumination of 95%. This is the percentage of the Moon illuminated by the Sun. The illumination is constantly changing and can vary up to 10% a day. To see how the lunar illumination changes throughout August 1 visit this Moon Illumination Chart.
On August 1 the Moon is 12.61 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.
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, you know was on the date the person was born.