Waning Gibbous on

Moon phase on 31 May 2018 Thursday is Waning Gibbous, 16 days old Moon is in Capricorn.

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Moon phase for

Lunar calendar 2018 | May 2018

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

Waning Gibbous 97% illuminated

Waning Gibbous is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 97% and getting smaller. The 16 days old Moon is in ♑ Capricorn.

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Moon phases for next 7 days

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Moon phase and lunation details

1 day after Full Moon

Previous main lunar phase is the Full Moon before 1 day on 29 May 2018 at 14:20.

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 is entering ♑ Capricorn

Moon is passing first ∠1° of ♑ Capricorn tropical zodiac sector.

Apparent angular diameter ∠1775"

Lunar disc appears visually 6.4% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1775" and ∠1892".

Flower Moon before 1 day

Next Full Moon is the Strawberry Moon of June 2018 after 27 days on 28 June 2018 at 04:53.

Upcoming main Moon phases

  • Last Quarter in Pisces ♓ on 6 June 2018 at 18:32
  • New Moon in Gemini ♊ on 13 June 2018 at 19:43
  • First Quarter in Virgo ♍ on 20 June 2018 at 10:51
  • Full Moon in Capricorn ♑ on 28 June 2018 at 04:53

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 227 / 1180

The Moon is 16 days old. Earth's natural satellite is moving from the middle to the last part of current synodic month. This is lunation 227 of Meeus index or 1180 from Brown series.

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Synodic month length 29.33 days

The length of the lunation is 29 days, 7 hours and 55 minutes. It is 50 minutes longer than the next lunation's length. The lengths of the following synodic months are going to decreasing with the true anomaly getting closer to the value it has at the point of New Moon at perigee (∠0° or ∠360°).

Lunation length shorter than mean

The length of the current synodic month is 4 hours and 49 minutes shorter than the mean synodic month length. It is 1 hour and 20 minutes longer compared to 21st century's shortest synodic month length.

Lunar orbit position on

True anomaly ∠321.7°

At the beginning of the lunation cycle the true anomaly is ∠321.7°. At the beginning of next synodic month the true anomaly is going to be ∠340.3°.

Moon before perigee

13 days after point of perigee on 17 May 2018 at 21:06 in ♊ Gemini. The lunar orbit is getting widen, while the Moon is moving away from the Earth. It will keep this direction over the next 2 days, until the Moon reaches the point of next apogee on 2 June 2018 at 16:34 in ♑ Capricorn.

Previous perigeeNext apogee

Distance to Moon 403 827 km

The Moon is 403 827 km (250 926 mi) away from Earth and getting further over the next 2 days until the point apogee when Earth-Moon distance is going to be 405 316 km (251 852 mi).

Moon before descending node

10 days after ascending node on 20 May 2018 at 13:13 in ♌ Leo. The Moon is located north of the ecliptic over the following 3 days, until the lunar orbit crosses from North to South in descending node on 3 June 2018 at 12:39 in ♒ Aquarius.

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Draconic month

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

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Moon before southern standstill

12 days since the previous standstill on 18 May 2018 at 15:02 in ♋ Cancer when the Moon has reached North declination of ∠20.652°, the lunar orbit is extending southward over the next day to face maximum declination of ∠-20.727° at the point of next southern standstill on 1 June 2018 at 07:09 in ♑ Capricorn.

Previous standstillNext standstill

Syzygy in 13 days

In 13 days on 13 June 2018 at 19:43 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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