Full Moon on

Moon phase on 18 December 2021 Saturday is Full Moon, 14 days old Moon is in Gemini.

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Moon phase for

Lunar calendar 2021 | December 2021

Full Moon phase
Full Moon phase
Image credit: NASA/Goddard Space Flight Center Scientific Visualization Studio.

Full Moon 100% illuminated

Full Moon is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 100%. The 14 days old Moon is in ♊ Gemini.

* The exact date and time of this Full Moon phase is on 19 December 2021 at 04:36 UTC.

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Moon phases for next 7 days

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Moon phase and lunation details

Moonrise and moonset

Moon rises at sunset and sets at sunrise. It is visible all night and it is high in the sky around midnight.

Moon in ♊ Gemini

Moon is passing about ∠19° of ♊ Gemini tropical zodiac sector.

Apparent angular diameter ∠1768"

Lunar disc appears visually 9.8% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1768" and ∠1950".

It is Cold Moon

The Full Moon this days is the Cold of December 2021.

Upcoming main Moon phases

Spring tide

There is high Full Moon ocean tide on this date. Combined Sun and Moon gravitational tidal force working on Earth is strong, because of the Sun-Earth-Moon syzygy alignment.

Lunation 271 / 1224

The Moon is 14 days old. Earth's natural satellite is moving through the middle part of current synodic month. This is lunation 271 of Meeus index or 1224 from Brown series.

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Synodic month length 29.45 days

Length of current 271 lunation is 29 days, 10 hours and 50 minutes. It is 23 minutes shorter than next lunation 272 length.

Lunation length shorter than mean

Length of current synodic month is 1 hour and 54 minutes shorter than the mean length of synodic month, but it is still 4 hours and 15 minutes longer, compared to 21st century shortest.

Lunar orbit position on

True anomaly ∠358.3°

This New Moon true anomaly is ∠358.3°. At beginning of next synodic month true anomaly will be ∠13.9°. 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 in apogee

Moon is reaching point of apogee on this date at 02:16, this is 13 days after last perigee on 4 December 2021 at 10:01 in ♐ Sagittarius. Lunar orbit is starting to get closer, while the Moon is moving inward the Earth for 14 days ahead, until it will get to the point of next perigee on 1 January 2022 at 23:00 in ♐ Sagittarius.

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Distance to Moon 406 322 km

This apogee Moon is 406 322 km (252 477 mi) away from Earth. It is 914 km farther than the mean apogee distance, but it is still 387 km closer than the farthest apogee of 21st century.

Moon after ascending node

1 day after its ascending node on 17 December 2021 at 00:12 in ♊ Gemini, the Moon is following the northern part of its orbit for the next 12 days, until it will cross the ecliptic from North to South in descending node on 31 December 2021 at 01:07 in ♐ Sagittarius.

Previous nodeNext node

Draconic month

1 day after beginning of current draconic month in ♊ Gemini, the Moon is moving from the beginning to the first part of it.

PreviousCurrent draconic monthNext

Moon before northern standstill

12 days after previous South standstill on 6 December 2021 at 02:25 in ♑ Capricorn, when Moon has reached southern declination of ∠-26.331°. Next day the lunar orbit moves northward to face North declination of ∠26.306° in the next northern standstill on 20 December 2021 at 04:32 in ♋ Cancer.

Previous standstillNext standstill

Sun-Earth-Moon syzygy

The Moon is in Full Moon geocentric opposition with the Sun on this date and this alignment forms Sun-Earth-Moon syzygy.

Previous syzygyNext syzygy

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