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moon_phase_WanG_85
August 19
Waning Gibbous
86%
moon_phase_WanG_75
August 20
Waning Gibbous
79%
moon_phase_WanG_70
August 21
Waning Gibbous
Illumination: 71%
moon_phase_WanG_60
August 22
Waning Gibbous
61%
moon_phase_last
August 23
Last Quarter
51%

Moon Phase on: August 21, 2019

On this day the Moon was in a Waning Gibbous Phase. This is the first phase after the Full Moon occurs. It lasts roughly 7 days with the Moon’s illumination growing smaller each day until the Moon becomes a Last Quarter Moon with an illumination of 50%. The average Moon rise for this phase is between 9pm and Midnight depending on the age of the phase. The moon rises later and later each night setting after sunrise in the morning. During this phase the Moon can also be seen in the early morning daylight hours on the western horizon.

Visit the August 2019 Moon Phases Calendar to see all the daily moon phase for this month.

Waning Gibbous Phase

The Waning Gibbous on August 21 has an illumination of 71%. 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 August 21 the Moon is 20.15 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.

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.

TODAY'S MOON PHASEtodays moon

Phase Details for - August 21

Phase: Waning Gibbous
Illumination: 71%
Moon Age: 20.15 days
Moon Angle: 0.50
Moon Distance: 396,958.59 km
Sun Angle: 0.53
Sun Distance: 151,328,274.13 km

Useful Moon Resources


Waning Gibbous Moonrise and Moonset

WanG_70. WanG_70 WanG_70 moon rise
moon rise up average moon rise
moon rise up Average Mid-phase
moon rise up Average Moon Set