Waning Crescent on

Moon phase on 18 May 2031 Sunday is Waning Crescent, 26 days old Moon is in Aries.

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Moon phase for

Lunar calendar 2031 | May 2031

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

Waning Crescent 8% illuminated

Waning Crescent is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 8% and getting smaller. The 26 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

4 days after Last Quarter

Previous main lunar phase is the Last Quarter before 4 days on 13 May 2031 at 19:07.

Moonrise and moonset

Moon rises after midnight to early morning and sets in the afternoon. It is visible in the early morning low to the east.

Moon in ♈ Aries

Moon is passing about ∠25° of ♈ Aries tropical zodiac sector.

Apparent angular diameter ∠1843"

Lunar disc appears visually 2.9% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1843" and ∠1897".

Strawberry Moon after 17 days

Next Full Moon is the Strawberry Moon of June 2031 after 17 days on 5 June 2031 at 11:58.

Upcoming main Moon phases

  • 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
  • Last Quarter in Pisces ♓ on 12 June 2031 at 02:20

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 387 / 1340

The Moon is 26 days old. Earth's natural satellite is moving from the second to the final 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

The length of the lunation is 29 days, 14 hours and 20 minutes. It is 47 minutes shorter than the next lunation's length. The lengths of the following synodic months are going to increasing with the true anomaly getting closer to the value it has at the point of New Moon at apogee (∠180°).

Lunation length longer than mean

The length of the current synodic month is 1 hour and 36 minutes longer than the mean synodic month length. It is 5 hours and 27 minutes shorter compared to 21st century's longest synodic month length.

Lunar orbit position on

True anomaly ∠106.4°

At the beginning of the lunation cycle the true anomaly is ∠106.4°. At the beginning of next synodic month the true anomaly is going to be ∠139.8°.

Moon before perigee

9 days after point of perigee on 9 May 2031 at 07:28 in ♐ Sagittarius. The lunar orbit is getting widen, while the Moon is moving away from the Earth. It will keep this direction over the next 6 days, until the Moon reaches the point of next apogee on 25 May 2031 at 02:08 in ♋ Cancer.

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Distance to Moon 388 935 km

The Moon is 388 935 km (241 673 mi) away from Earth and getting further over the next 6 days until the point apogee when Earth-Moon distance is going to be 405 723 km (252 105 mi).

Moon before descending node

10 days after ascending node on 7 May 2031 at 22:55 in ♏ Scorpio. The Moon is located north of the ecliptic over the following 2 days, until the lunar orbit crosses from North to South in descending node on 21 May 2031 at 03:26 in ♉ Taurus.

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Draconic month

10 days since the beginning of current draconic month in ♏ Scorpio, the Moon is navigating from the beginning to the first part of the cycle.

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Moon before northern standstill

9 days since the previous standstill on 9 May 2031 at 07:56 in ♐ Sagittarius when the Moon has reached South declination of ∠-21.092°, the lunar orbit is extending northward over the next 4 days to face maximum declination of ∠21.091° at the point of next northern standstill on 22 May 2031 at 19:41 in ♊ Gemini.

Previous standstillNext standstill

Syzygy in 2 days

In 2 days on 21 May 2031 at 07:17 in ♊ Gemini the Moon is going to be in a New Moon geocentric conjunction with the Sun and thus forming the next Sun-Moon-Earth syzygy alignment.

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