Waning Gibbous on

Moon phase on 31 December 2015 Thursday is Waning Gibbous, 20 days old Moon is in Virgo.

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Moon phase for

Lunar calendar 2015 | December 2015

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

Waning Gibbous 66% illuminated

Waning Gibbous is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 66% and getting smaller. The 20 days old Moon is in ♍ Virgo.

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Moon phases for next 7 days

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Moon phase and lunation details

6 days after Full Moon

Previous main lunar phase is the Full Moon before 6 days on 25 December 2015 at 11:11.

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 ♍ Virgo

Moon is passing about ∠21° of ♍ Virgo tropical zodiac sector.

Apparent angular diameter ∠1776"

Lunar disc appears visually 9.4% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1776" and ∠1951".

Cold Moon before 6 days

Next Full Moon is the Wolf Moon of January 2016 after 23 days on 24 January 2016 at 01:46.

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 197 / 1150

The Moon is 20 days old. Earth's natural satellite is moving from the middle to the last part of current synodic month. This is lunation 197 of Meeus index or 1150 from Brown series.

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Synodic month length 29.63 days

Length of current 197 lunation is 29 days, 15 hours and 1 minute. It is 1 hour and 53 minutes longer than next lunation 198 length.

Lunation length longer than mean

Length of current synodic month is 2 hours and 17 minutes longer than the mean length of synodic month, but it is still 4 hours and 46 minutes shorter, compared to 21st century longest.

Lunar orbit position on

True anomaly ∠255.6°

This lunation true anomaly is ∠255.6°. At the beginning of next synodic month true anomaly will be ∠292.2°. 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 before apogee

10 days after point of perigee on 21 December 2015 at 08:53 in ♉ Taurus. The lunar orbit is getting wider, while the Moon is moving outward the Earth. It will keep this direction for the next day, until it get to the point of next apogee on 2 January 2016 at 11:53 in ♎ Libra.

Previous perigeeNext apogee

Distance to Moon 403 510 km

Moon is 403 510 km (250 729 mi) away from Earth on this date. Moon moves farther next day until apogee, when Earth-Moon distance will reach 404 279 km (251 207 mi).

Moon in ascending node

Moon is in ascending node in ♍ Virgo at 20:19 on this date, it crosses the ecliptic from South to North. Moon will follow the northern part of its orbit for the next 14 days to meet descending node on 14 January 2016 at 15:48 in ♓ Pisces.

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New draconic month

At 20:19 on this date the Moon is completing its previous draconic month and is entering the new one.


Moon after northern standstill

6 days after previous North standstill on 25 December 2015 at 07:30 in ♋ Cancer, when Moon has reached northern declination of ∠18.444°. Next 8 days the lunar orbit moves southward to face South declination of ∠-18.420° in the next southern standstill on 8 January 2016 at 17:56 in ♐ Sagittarius.

Previous standstillNext standstill

Syzygy in 9 days

After 9 days on 10 January 2016 at 01:30 in ♑ Capricorn, 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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