Waning Gibbous on

Moon phase on 8 August 2031 Friday is Waning Gibbous, 20 days old Moon is in Aries.

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Moon phase for

Lunar calendar 2031 | August 2031

Waning Gibbous phase
Waning Gibbous phase
Image credit: NASA/Goddard Space Flight Center Scientific Visualization Studio.

Waning Gibbous 65% illuminated

Waning Gibbous is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 65% and getting smaller. The 20 days old Moon is in ♈ Aries.

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Moon phases for next 7 days

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Moon phase and lunation details

5 days after Full Moon

Previous main lunar phase is the Full Moon before 5 days on 3 August 2031 at 01:45.

Moonrise and moonset

Moon rises in the evening and sets in the morning. It is visible to the southwest and it is high in the sky after midnight.

Moon in ♈ Aries

Moon is leaving the last ∠2° of ♈ Aries tropical zodiac sector and will enter ♉ Taurus later.

Apparent angular diameter ∠1855"

Lunar disc appears visually 2% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1855" and ∠1892".

Sturgeon Moon before 5 days

Next Full Moon is the Harvest Moon of September 2031 after 23 days on 1 September 2031 at 09:20.

Upcoming main Moon phases

Neap tide

There is low ocean tide on this date. Sun and Moon gravitational forces are not aligned, but meet at big angle, so their combined tidal force is weak.

Lunation 390 / 1343

The Moon is 20 days old. Earth's natural satellite is moving from the middle to the last part of current synodic month. This is lunation 390 of Meeus index or 1343 from Brown series.

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Synodic month length 29.62 days

Length of current 390 lunation is 29 days, 14 hours and 52 minutes. It is 37 minutes longer than next lunation 391 length.

Lunation length longer than mean

Length of current synodic month is 2 hours and 8 minutes longer than the mean length of synodic month, but it is still 4 hours and 55 minutes shorter, compared to 21st century longest.

Lunar orbit position on

True anomaly ∠188.7°

This lunation true anomaly is ∠188.7°. At the beginning of next synodic month true anomaly will be ∠213.5°. The length of upcoming synodic months will keep decreasing since the true anomaly gets closer to the value of New Moon at point of perigee (∠0° or ∠360°).

Moon after perigee

6 days after point of perigee on 2 August 2031 at 06:47 in ♑ Capricorn. The lunar orbit is getting wider, while the Moon is moving outward the Earth. It will keep this direction for the next 6 days, until it get to the point of next apogee on 14 August 2031 at 21:37 in ♋ Cancer.

Previous perigeeNext apogee

Distance to Moon 386 372 km

Moon is 386 372 km (240 080 mi) away from Earth on this date. Moon moves farther next 6 days until apogee, when Earth-Moon distance will reach 405 946 km (252 243 mi).

Moon before descending node

10 days after its ascending node on 28 July 2031 at 23:54 in ♏ Scorpio, the Moon is following the northern part of its orbit for the next 2 days, until it will cross the ecliptic from North to South in descending node on 10 August 2031 at 14:10 in ♉ Taurus.

Previous nodeNext node

Draconic month

10 days after beginning of current draconic month in ♏ Scorpio, the Moon is moving from the beginning to the first part of it.

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Moon before northern standstill

8 days after previous South standstill on 30 July 2031 at 15:45 in ♐ Sagittarius, when Moon has reached southern declination of ∠-20.951°. Next 4 days the lunar orbit moves northward to face North declination of ∠20.868° in the next northern standstill on 12 August 2031 at 15:58 in ♊ Gemini.

Previous standstillNext standstill

Syzygy in 9 days

After 9 days on 18 August 2031 at 04:32 in ♌ Leo, the Moon will be in New Moon geocentric conjunction with the Sun and this alignment forms next Sun-Moon-Earth syzygy.

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