Waning Gibbous on

Moon phase on 9 May 2031 Friday is Waning Gibbous, 17 days old Moon is in Sagittarius.

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Moon phase for

Lunar calendar 2031 | May 2031

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

Waning Gibbous 92% illuminated

Waning Gibbous is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 92% and getting smaller. The 17 days old Moon is in ♐ Sagittarius.

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Moon phases for next 7 days

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Moon phase and lunation details

2 days after Full Moon

Previous main lunar phase is the Full Moon before 2 days on 7 May 2031 at 03:40.

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 ♐ Sagittarius

Moon is passing about ∠21° of ♐ Sagittarius tropical zodiac sector.

Apparent angular diameter ∠1968"

Lunar disc appears visually 3.5% wider than solar disc. Moon and Sun apparent angular diameters are ∠1968" and ∠1900".

Flower Moon before 2 days

Next Full Moon is the Strawberry Moon of June 2031 after 26 days on 5 June 2031 at 11:58.

Upcoming main Moon phases

  • Last Quarter in Aquarius ♒ on 13 May 2031 at 19:07
  • New Moon in Gemini ♊ on 21 May 2031 at 07:17
  • First Quarter in Virgo ♍ on 29 May 2031 at 11:20
  • Full Moon in Sagittarius ♐ on 5 June 2031 at 11:58

Moderate tide

There is medium ocean tide on this date. Sun and Moon gravitational forces are not aligned, but meet at very acute angle, so their combined tidal force is moderate.

Lunation 387 / 1340

The Moon is 17 days old. Earth's natural satellite is moving from the middle to the last part of current synodic month. This is lunation 387 of Meeus index or 1340 from Brown series.

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Synodic month length 29.6 days

Length of current 387 lunation is 29 days, 14 hours and 20 minutes. It is 47 minutes shorter than next lunation 388 length.

Lunation length longer than mean

Length of current synodic month is 1 hour and 36 minutes longer than the mean length of synodic month, but it is still 5 hours and 27 minutes shorter, compared to 21st century longest.

Lunar orbit position on

True anomaly ∠106.4°

This New Moon true anomaly is ∠106.4°. At beginning of next synodic month true anomaly will be ∠139.8°. The length of upcoming synodic months will keep increasing since the true anomaly gets closer to the value of New Moon at point of apogee (∠180°).

Moon in perigee

Moon is reaching point of perigee on this date at 07:28, this is 11 days after last apogee on 27 April 2031 at 10:30 in ♋ Cancer. Lunar orbit is starting to get wider, while the Moon is moving outward the Earth for 15 days ahead, until it will get to the point of next apogee on 25 May 2031 at 02:08 in ♋ Cancer.

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Distance to Moon 362 851 km

This perigee Moon is 362 851 km (225 465 mi) away from Earth. It is 343 km closer than the mean perigee distance, but it is still 7 505 km farther than the closest perigee of 21st century.

Moon after ascending node

1 day after its ascending node on 7 May 2031 at 22:55 in ♏ Scorpio, the Moon is following the northern part of its orbit for the next 11 days, until it will cross the ecliptic from North to South in descending node on 21 May 2031 at 03:26 in ♉ Taurus.

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Draconic month

1 day 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 in southern standstill

At 07:56 on this date the Moon is meeting its South standstill point, when it will reach southern declination of ∠-21.092°. Next 13 days the lunar orbit will move in opposite northward direction to face North declination of ∠21.091° in its northern standstill point on 22 May 2031 at 19:41 in ♊ Gemini.

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Syzygy in 11 days

After 11 days on 21 May 2031 at 07:17 in ♊ Gemini, 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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