First Quarter on . The illuminated surface of the moon is 45% and growing larger. The lunar cycle is 7 days young.
* The exact date and time of this First Quarter phase is on 24 January 2018 at 22:20 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 leaving the last ∠1° of ♈ Aries tropical zodiac sector and will enter ♉ Taurus later.
Next Full Moon is the Wolf Moon of January 2018 after 7 days on 31 January 2018 at 13:27.
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.
Lunar disc appears visually 2.2% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1907" and ∠1949".
The Moon is 7 days young and navigating through the first part of the current synodic month. This is lunation 223 of Meeus index or 1176 from Brown series.
The length of this lunation is 29 days, 18 hours and 48 minutes and it is 2 hours and 42 minutes longer than the upcoming lunation's length. This is the year's longest synodic month of 2018. The lengths of the following synodic months are going to decrease with the lunar orbit true anomaly getting closer to the value it has at the point of New Moon at perigee (∠0° or ∠360°).
The length of the current synodic month is 7 hours and 3 minutes longer than the mean synodic month length. It is 59 minutes shorter compared to 21st century's longest synodic month length.
The true anomaly of the Moon orbit at the beginning of this lunation cycle is ∠198.1° and at the beginning of the next lunar synodic month the true anomaly is going to be ∠227.1°.
9 days since point of apogee on 15 January 2018 at 02:10 in ♑ Capricorn the lunar orbit is getting narrow while the Moon is moving towards the Earth. It will keep this direction over the next 5 days until the Moon reaches the point of next perigee on 30 January 2018 at 09:54 in ♋ Cancer.
The Moon is 375 918 km (233 585 mi) away from Earth and getting closer over the next 5 days until the point perigee when Earth-Moon distance is going to be 358 995 km (223 069 mi).
5 days after descending node on 18 January 2018 at 14:28 in ♒ Aquarius the Moon is positioned south of the ecliptic over the following 7 days until the lunar crosses the ecliptic again from South to North in ascending node on 31 January 2018 at 18:46 in ♌ Leo.
8 days since the last southern standstill on 15 January 2018 at 16:28 in ♑ Capricorn when the Moon has reached South declination of ∠-20.048° the lunar orbit is extending northward over the next 4 days to face maximum declination of ∠20.027° at the point of next northern standstill on 29 January 2018 at 11:32 in ♋ Cancer.
20 days since the beginning of this draconic month in ♌ Leo the Moon is navigating from the second to the final part of the lunar cycle.
In 7 days on 31 January 2018 at 13:27 in ♌ Leo 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
