Moon* ♊ Gemini
Moon phase on 18 December 2021 Saturday is Full Moon, 14 days old Moon is in Gemini.Share this page: twitter facebook linkedin
Moon rises at sunset and sets at sunrise. It is visible all night and it is high in the sky around midnight.
Moon is passing about ∠19° of ♊ Gemini tropical zodiac sector.
Lunar disc appears visually 9.8% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1768" and ∠1950".
The Full Moon this days is the Cold of December 2021.
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.
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.
Length of current 271 lunation is 29 days, 10 hours and 50 minutes. It is 23 minutes shorter than next lunation 272 length.
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.
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 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.
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.
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.
1 day after beginning of current draconic month in ♊ Gemini, the Moon is moving from the beginning to the first part of it.
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.
The Moon is in Full Moon geocentric opposition with the Sun on this date and this alignment forms Sun-Earth-Moon syzygy.