Waning Crescent on

Moon phase on 13 December 2017 Wednesday is Waning Crescent, 25 days old Moon is in Libra.

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Moon phase for

Lunar calendar 2017 | December 2017

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

Waning Crescent 20% illuminated

Waning Crescent is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 20% and getting smaller. The 25 days old Moon is in ♎ Libra.

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Moon phases for next 7 days

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Moon phase and lunation details

3 days after Last Quarter

Previous main lunar phase is the Last Quarter before 3 days on 10 December 2017 at 07:51.

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 ♎ Libra

Moon is leaving the last ∠1° of ♎ Libra tropical zodiac sector and will enter ♏ Scorpio later.

Apparent angular diameter ∠1825"

Lunar disc appears visually 6.6% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1825" and ∠1949".

Wolf Moon after 19 days

Next Full Moon is the Wolf Moon of January 2018 after 19 days on 2 January 2018 at 02:24.

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 221 / 1174

The Moon is 25 days old. Earth's natural satellite is moving from the second to the final part of current synodic month. This is lunation 221 of Meeus index or 1174 from Brown series.

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Synodic month length 29.78 days

Length of current 221 lunation is 29 days, 18 hours and 48 minutes. It is 59 minutes shorter than next lunation 222 length.

Lunation length longer than mean

Length of current synodic month is 6 hours and 4 minutes longer than the mean length of synodic month, but it is still 59 minutes shorter, compared to 21st century longest.

Lunar orbit position on

True anomaly ∠147°

This New Moon true anomaly is ∠147°. At beginning of next synodic month true anomaly will be ∠173.3°. 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 before apogee

9 days after point of perigee on 4 December 2017 at 08:42 in ♊ Gemini. The lunar orbit is getting wider, while the Moon is moving outward the Earth. It will keep this direction for the next 5 days, until it get to the point of next apogee on 19 December 2017 at 01:27 in ♑ Capricorn.

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Distance to Moon 392 720 km

Moon is 392 720 km (244 025 mi) away from Earth on this date. Moon moves farther next 5 days until apogee, when Earth-Moon distance will reach 406 605 km (252 653 mi).

Moon after ascending node

5 days after its ascending node on 8 December 2017 at 00:39 in ♌ Leo, the Moon is following the northern part of its orbit for the next 8 days, until it will cross the ecliptic from North to South in descending node on 22 December 2017 at 10:04 in ♒ Aquarius.

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Draconic month

5 days after beginning of current draconic month in ♌ Leo, the Moon is moving from the beginning to the first part of it.

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Moon before southern standstill

8 days after previous North standstill on 5 December 2017 at 11:43 in ♋ Cancer, when Moon has reached northern declination of ∠20.015°. Next 5 days the lunar orbit moves southward to face South declination of ∠-20.062° in the next southern standstill on 19 December 2017 at 09:31 in ♑ Capricorn.

Previous standstillNext standstill

Syzygy in 4 days

After 4 days on 18 December 2017 at 06:31 in ♐ Sagittarius, 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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