Quarter ♉ Taurus
Moon phase on 20 January 2021 Wednesday is First Quarter, 7 days young Moon is in Aries.Share this page: twitter facebook linkedin
First Quarter is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 46% and growing larger. The 7 days young Moon is in ♈ Aries.
* The exact date and time of this First Quarter phase is on 20 January 2021 at 21:02 UTC.
Moon rises at noon and sets at midnight. It is visible high in the southern sky in early evening.
Lunar disc appears visually 9.6% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1771" and ∠1950".
Next Full Moon is the Wolf Moon of January 2021 after 8 days on 28 January 2021 at 19:16.
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.
The Moon is 7 days young. Earth's natural satellite is moving through the first part of current synodic month. This is lunation 260 of Meeus index or 1213 from Brown series.
Length of current 260 lunation is 29 days, 14 hours and 5 minutes. It is 1 hour and 10 minutes shorter than next lunation 261 length.
Length of current synodic month is 1 hour and 21 minutes longer than the mean length of synodic month, but it is still 5 hours and 42 minutes shorter, compared to 21st century longest.
This New Moon true anomaly is ∠53.8°. At beginning of next synodic month true anomaly will be ∠87°. 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°).
10 days after point of perigee on 9 January 2021 at 15:39 in ♏ Scorpio. 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 21 January 2021 at 13:11 in ♉ Taurus.
Moon is 404 838 km (251 555 mi) away from Earth on this date. Moon moves farther next day until apogee, when Earth-Moon distance will reach 404 361 km (251 258 mi).
9 days after its descending node on 10 January 2021 at 20:15 in ♐ Sagittarius, the Moon is following the southern part of its orbit for the next 4 days, until it will cross the ecliptic from South to North in ascending node on 24 January 2021 at 21:47 in ♊ Gemini.
22 days after beginning of current draconic month in ♊ Gemini, the Moon is moving from the second to the final part of it.
8 days after previous South standstill on 12 January 2021 at 08:18 in ♑ Capricorn, when Moon has reached southern declination of ∠-24.870°. Next 6 days the lunar orbit moves northward to face North declination of ∠24.898° in the next northern standstill on 26 January 2021 at 15:39 in ♋ Cancer.
After 8 days on 28 January 2021 at 19:16 in ♌ Leo, the Moon will be in Full Moon geocentric opposition with the Sun and this alignment forms next Sun-Earth-Moon syzygy.