Quarter ♉ Taurus
First Quarter is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 50% and growing larger. The 7 days young Moon is in ♈ Aries.
* The exact date and time of this First Quarter phase is on 18 January 2100 at 12:34 UTC.
Moon rises at noon and sets at midnight. It is visible high in the southern sky in early evening.
Lunar disc appears visually 9.7% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1771" and ∠1950".
Next Full Moon is the Wolf Moon of January 2100 after 7 days on 26 January 2100 at 02:49.
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 1237 of Meeus index or 2190 from Brown series.
Length of current 1237 lunation is 29 days, 15 hours and 59 minutes. It is 1 hour and 35 minutes shorter than next lunation 1238 length.
Length of current synodic month is 3 hours and 15 minutes longer than the mean length of synodic month, but it is still 3 hours and 48 minutes shorter, compared to 21st century longest.
This New Moon true anomaly is ∠81.3°. At beginning of next synodic month true anomaly will be ∠119.1°. 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°).
1 day after point of apogee on 17 January 2100 at 10:48 in ♈ Aries. The lunar orbit is getting closer, while the Moon is moving inward the Earth. It will keep this direction for the next 10 days, until it get to the point of next perigee on 29 January 2100 at 05:53 in ♍ Virgo.
Moon is 404 825 km (251 547 mi) away from Earth on this date. Moon moves closer next 10 days until perigee, when Earth-Moon distance will reach 366 241 km (227 572 mi).
3 days after its ascending node on 15 January 2100 at 03:56 in ♓ Pisces, the Moon is following the northern part of its orbit for the next 10 days, until it will cross the ecliptic from North to South in descending node on 29 January 2100 at 00:35 in ♍ Virgo.
3 days after beginning of current draconic month in ♓ Pisces, the Moon is moving from the beginning to the first part of it.
9 days after previous South standstill on 8 January 2100 at 21:59 in ♐ Sagittarius, when Moon has reached southern declination of ∠-28.379°. Next 4 days the lunar orbit moves northward to face North declination of ∠28.437° in the next northern standstill on 23 January 2100 at 08:16 in ♊ Gemini.
After 7 days on 26 January 2100 at 02:49 in ♌ Leo, the Moon will be in Full Moon geocentric opposition with the Sun and this alignment forms next Sun-Earth-Moon syzygy.