Waning Gibbous on

Moon phase on 4 December 2017 Monday is Waning Gibbous, 15 days old Moon is in Gemini.

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Moon phase for

Lunar calendar 2017 | December 2017

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

Waning Gibbous 99% illuminated

Waning Gibbous is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 99% and getting smaller. The 15 days old Moon is in ♊ Gemini.

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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 3 December 2017 at 15:47.

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 ♊ Gemini

Moon is passing about ∠24° of ♊ Gemini tropical zodiac sector.

Apparent angular diameter ∠1972"

Lunar disc appears visually 1.3% wider than solar disc. Moon and Sun apparent angular diameters are ∠1972" and ∠1947".

Cold Moon before 1 day

Next Full Moon is the Wolf Moon of January 2018 after 28 days on 2 January 2018 at 02:24.

Upcoming main Moon phases

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 221 / 1174

The Moon is 15 days old. Earth's natural satellite is moving from the middle to the last 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

The length of the lunation is 29 days, 18 hours and 48 minutes. It is 59 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 6 hours and 4 minutes longer than the mean synodic month length. It is 59 minutes shorter compared to 21st century's longest synodic month length.

Lunar orbit position on

True anomaly ∠147°

At the beginning of the lunation cycle the true anomaly is ∠147°. At the beginning of next synodic month the true anomaly is going to be ∠173.3°.

Moon at perigee

Moon is at perigee at 08:42. It is 12 days after previous apogee on 21 November 2017 at 18:52 in ♐ Sagittarius. Lunar orbit is going to widen while the Moon is moving away from the Earth over the next 14 days, until point of next apogee on 19 December 2017 at 01:27 in ♑ Capricorn.

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Distance to Moon 357 496 km

This perigee Moon is 357 496 km (222 138 mi) away from Earth. It is 5 012 km closer than the mean perigee distance, but it is still 12 860 km further than the closest perigee of 21st century.

Moon before ascending node

9 days after descending node on 25 November 2017 at 08:22 in ♒ Aquarius. The Moon is located south of the ecliptic over the following 3 days, until the lunar orbit crosses from South to North in ascending node on 8 December 2017 at 00:39 in ♌ Leo.

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Draconic month

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

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Moon before northern standstill

12 days since the previous standstill on 22 November 2017 at 02:06 in ♑ Capricorn when the Moon has reached South declination of ∠-19.959°, the lunar orbit is extending northward over the next day to face maximum declination of ∠20.015° at the point of next northern standstill on 5 December 2017 at 11:43 in ♋ Cancer.

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Syzygy in 13 days

In 13 days on 18 December 2017 at 06:31 in ♐ Sagittarius 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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