Waning Gibbous on

Moon phase on 6 September 2031 Saturday is Waning Gibbous, 20 days old Moon is in Taurus.

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Moon phase for

Lunar calendar 2031 | September 2031

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

Waning Gibbous 71% illuminated

Waning Gibbous is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 71% and getting smaller. The 20 days old Moon is in ♉ Taurus.

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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 1 September 2031 at 09:20.

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 ♉ Taurus

Moon is passing about ∠19° of ♉ Taurus tropical zodiac sector.

Apparent angular diameter ∠1824"

Lunar disc appears visually 4.3% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1824" and ∠1904".

Harvest Moon before 5 days

Next Full Moon is the Harvest Moon of September 2031 after 24 days on 30 September 2031 at 18:58.

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 391 / 1344

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 391 of Meeus index or 1344 from Brown series.

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Synodic month length 29.59 days

Length of current 391 lunation is 29 days, 14 hours and 15 minutes. It is 41 minutes longer than next lunation 392 length.

Lunation length longer than mean

Length of current synodic month is 1 hour and 31 minutes longer than the mean length of synodic month, but it is still 5 hours and 32 minutes shorter, compared to 21st century longest.

Lunar orbit position on

True anomaly ∠213.5°

This lunation true anomaly is ∠213.5°. At the beginning of next synodic month true anomaly will be ∠245.2°. 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 before apogee

6 days after point of perigee on 30 August 2031 at 12:53 in ♒ Aquarius. The lunar orbit is getting wider, while the Moon is moving outward the Earth. It will keep this direction for the next 4 days, until it get to the point of next apogee on 11 September 2031 at 11:54 in ♋ Cancer.

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Distance to Moon 392 877 km

Moon is 392 877 km (244 122 mi) away from Earth on this date. Moon moves farther next 4 days until apogee, when Earth-Moon distance will reach 405 006 km (251 659 mi).

Moon in descending node

Moon is in descending node in ♉ Taurus at 16:34 on this date, it crosses the ecliptic from North to South. Moon will follow the southern part of its orbit for the next 14 days to meet ascending node on 21 September 2031 at 02:24 in ♏ Scorpio.

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Draconic month

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

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Moon before northern standstill

10 days after previous South standstill on 26 August 2031 at 23:55 in ♐ Sagittarius, when Moon has reached southern declination of ∠-20.731°. Next 2 days the lunar orbit moves northward to face North declination of ∠20.623° in the next northern standstill on 8 September 2031 at 23:27 in ♊ Gemini.

Previous standstillNext standstill

Syzygy in 10 days

After 10 days on 16 September 2031 at 18:47 in ♍ Virgo, 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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