First Quarter on . The illuminated surface of the moon is 57% and growing larger. The lunar cycle is 8 days young.
* The exact date and time of this First Quarter phase is on 19 March 2013 at 17:27 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 ∠8° of ♋ Cancer tropical zodiac sector.
Next Full Moon is the Worm Moon of March 2013 after 6 days on 27 March 2013 at 09:27.
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 8.3% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1772" and ∠1926".
The Moon is 8 days young and navigating through the first part of the current synodic month. This is lunation 163 of Meeus index or 1116 from Brown series.
The length of this lunation is 29 days, 13 hours and 44 minutes and it is 1 hour and 9 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 longer than the mean synodic month length. It is 6 hours and 3 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 ∠73.6° and at the beginning of the next lunar synodic month the true anomaly is going to be ∠110.3°.
1 day since point of apogee on 19 March 2013 at 03:13 in ♊ Gemini the lunar orbit is getting narrow while the Moon is moving towards the Earth. It will keep this direction over the next 10 days until the Moon reaches the point of next perigee on 31 March 2013 at 03:55 in ♐ Sagittarius.
The Moon is 404 464 km (251 322 mi) away from Earth and getting closer over the next 10 days until the point perigee when Earth-Moon distance is going to be 367 494 km (228 350 mi).
4 days after descending node on 16 March 2013 at 06:15 in ♉ Taurus the Moon is positioned south of the ecliptic over the following 9 days until the lunar crosses the ecliptic again from South to North in ascending node on 30 March 2013 at 05:55 in ♏ Scorpio.
1 day since the last northern standstill on 18 March 2013 at 21:50 in ♊ Gemini when the Moon has reached North declination of ∠20.335° the lunar orbit is extending southward over the next 12 days to face maximum declination of ∠-20.250° at the point of next southern standstill on 1 April 2013 at 12:03 in ♐ Sagittarius.
17 days since the beginning of this draconic month in ♏ Scorpio the Moon is navigating from the second to the final part of the lunar cycle.
In 6 days on 27 March 2013 at 09:27 in ♎ Libra 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