First Quarter on . The illuminated surface of the moon is 54% and growing larger. The lunar cycle is 8 days young.
* The exact date and time of this First Quarter phase is on 11 December 2021 at 01:36 UTC.
The moon rises at noon and sets at midnight. It is visible high in the southern sky in early evening.
Slide horizontally to discover the moon phase on nearby dates.
Main moon phases of the following lunar cycle.
Moon is passing about ∠25° of ♓ Pisces tropical zodiac sector.
Next Full Moon is the Cold Moon of December 2021 after 7 days on 19 December 2021 at 04:36.
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.
Lunar disc appears visually 4.9% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1855" and ∠1949".
The Moon is 8 days young and navigating through the first part of the current synodic month. This is lunation 271 of Meeus index or 1224 from Brown series.
The length of this lunation is 29 days, 10 hours and 50 minutes and it is 23 minutes shorter than the upcoming lunation's length. The lengths of the following synodic months are going to increase with the lunar orbit true anomaly getting closer to the value it has at the point of New Moon at apogee (∠180°).
The length of the current synodic month is 1 hour and 54 minutes shorter than the mean synodic month length. It is 4 hours and 15 minutes longer compared to 21st century's shortest synodic month length.
The true anomaly of the Moon orbit at the beginning of this lunation cycle is ∠358.3° and at the beginning of the next lunar synodic month the true anomaly is going to be ∠13.9°.
7 days since point of perigee on 4 December 2021 at 10:01 in ♐ Sagittarius the lunar orbit is getting widen while the Moon is moving away from the Earth. It will keep this direction over the next 6 days until the Moon reaches the point of next apogee on 18 December 2021 at 02:16 in ♊ Gemini.
The Moon is 386 428 km (240 115 mi) away from Earth and getting further over the next 6 days until the point apogee when Earth-Moon distance is going to be 406 322 km (252 477 mi).
7 days after descending node on 3 December 2021 at 14:58 in ♏ Scorpio the Moon is positioned south of the ecliptic over the following 5 days until the lunar crosses the ecliptic again from South to North in ascending node on 17 December 2021 at 00:12 in ♊ Gemini.
5 days since the last southern standstill on 6 December 2021 at 02:25 in ♑ Capricorn when the Moon has reached South declination of ∠-26.331° the lunar orbit is extending northward over the next 8 days to face maximum declination of ∠26.306° at the point of next northern standstill on 20 December 2021 at 04:32 in ♋ Cancer.
21 days since the beginning of this draconic month in ♉ Taurus the Moon is navigating from the second to the final part of the lunar cycle.
In 7 days on 19 December 2021 at 04:36 in ♊ Gemini the Moon is going to be in a Full Moon geocentric opposition with the Sun and thus forming the next Sun-Earth-Moon syzygy alignment.
Parts of this Lunar Calendar are based on Planetary Ephemeris Data Courtesy of Fred Espenak, www.Astropixels.com
Moon phase image credit to NASA/Goddard Space Flight Center Scientific Visualization Studio, svs.gsfc.nasa.gov