Waning Gibbous on . The illuminated surface of the moon is 81% and getting smaller. The lunar cycle is 19 days old.
The moon rises in the evening and sets in the morning. It is visible to the southwest and it is high in the sky after midnight.
Slide horizontally to discover the moon phase on nearby dates.
Main moon phases of the following lunar cycle.
Moon is passing first ∠3° of ♎ Libra tropical zodiac sector.
Previous main lunar phase is the Full Moon before 4 days on 27 January 2013 at 04:38.
Next Full Moon is the Snow Moon of February 2013 after 25 days on 25 February 2013 at 20:26.
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 2.5% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1899" and ∠1947".
The Moon is 19 days old and navigating from the middle to the last part of the current synodic month. This is lunation 161 of Meeus index or 1114 from Brown series.
The length of this lunation is 29 days, 11 hours and 36 minutes and it is 55 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 8 minutes shorter than the mean synodic month length. It is 5 hours and 1 minute 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 ∠23.3° and at the beginning of the next lunar synodic month the true anomaly is going to be ∠44.2°.
9 days since point of apogee on 22 January 2013 at 10:52 in ♊ Gemini the lunar orbit is getting narrow while the Moon is moving towards the Earth. It will keep this direction over the next 7 days until the Moon reaches the point of next perigee on 7 February 2013 at 12:09 in ♑ Capricorn.
The Moon is 377 370 km (234 487 mi) away from Earth and getting closer over the next 7 days until the point perigee when Earth-Moon distance is going to be 365 314 km (226 996 mi).
10 days after descending node on 21 January 2013 at 01:19 in ♉ Taurus the Moon is positioned south of the ecliptic over the following 3 days until the lunar crosses the ecliptic again from South to North in ascending node on 4 February 2013 at 02:14 in ♏ Scorpio.
8 days since the last northern standstill on 23 January 2013 at 05:12 in ♊ Gemini when the Moon has reached North declination of ∠20.816° the lunar orbit is extending southward over the next 5 days to face maximum declination of ∠-20.704° at the point of next southern standstill on 6 February 2013 at 00:27 in ♐ Sagittarius.
23 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 9 days on 10 February 2013 at 07:20 in ♒ Aquarius the Moon is going to be in a New Moon geocentric conjunction with the Sun and thus forming the next Sun-Moon-Earth 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