Full Moon on

Moon phase on 1 September 2031 Monday is Full Moon, 15 days old Moon is in Pisces.

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Moon phase for

Lunar calendar 2031 | September 2031

Full Moon phase
Full Moon phase
Image credit: NASA/Goddard Space Flight Center Scientific Visualization Studio.

Full Moon 100% illuminated

Full Moon is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 100%. The 15 days old Moon is in ♓ Pisces.

* The exact date and time of this Full Moon phase is on 1 September 2031 at 09:20 UTC.

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Moon phases for next 7 days

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Moon phase and lunation details

Moonrise and moonset

Moon rises at sunset and sets at sunrise. It is visible all night and it is high in the sky around midnight.

Moon in ♓ Pisces

Moon is passing about ∠10° of ♓ Pisces tropical zodiac sector.

Apparent angular diameter ∠1938"

Lunar disc appears visually 1.9% wider than solar disc. Moon and Sun apparent angular diameters are ∠1938" and ∠1901".

It is Harvest Moon

The Full Moon this days is the Harvest of September 2031.

Upcoming main Moon phases

Spring tide

There is high Full Moon ocean tide on this date. Combined Sun and Moon gravitational tidal force working on Earth is strong, because of the Sun-Earth-Moon syzygy alignment.

Lunation 391 / 1344

The Moon is 15 days old. Earth's natural satellite is moving through the middle part of current synodic month. This is lunation 391 of Meeus index or 1344 from Brown series.

PreviousCurrent lunationNext

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 after perigee

1 day 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 9 days, until it get to the point of next apogee on 11 September 2031 at 11:54 in ♋ Cancer.

Previous perigeeNext apogee

Distance to Moon 369 803 km

Moon is 369 803 km (229 785 mi) away from Earth on this date. Moon moves farther next 9 days until apogee, when Earth-Moon distance will reach 405 006 km (251 659 mi).

Moon before descending node

7 days after its ascending node on 25 August 2031 at 01:21 in ♏ Scorpio, the Moon is following the northern part of its orbit for the next 5 days, until it will cross the ecliptic from North to South in descending node on 6 September 2031 at 16:34 in ♉ Taurus.

Previous nodeNext node

Draconic month

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

PreviousCurrent draconic monthNext

Moon after southern standstill

5 days after previous South standstill on 26 August 2031 at 23:55 in ♐ Sagittarius, when Moon has reached southern declination of ∠-20.731°. Next 7 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

Sun-Earth-Moon syzygy

The Moon is in Full Moon geocentric opposition with the Sun on this date and this alignment forms Sun-Earth-Moon syzygy.

Previous syzygyNext syzygy

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