Last Quarter on . The illuminated surface of the moon is 57% and getting smaller. The lunar cycle is 21 days old.
* The exact date and time of this Last Quarter phase is on 20 October 2011 at 03:30 UTC.
The moon rises at midnight and sets at noon. It is visible to the south in the morning.
Slide horizontally to discover the moon phase on nearby dates.
Main moon phases of the following lunar cycle.
Moon is passing about ∠18° of ♋ Cancer tropical zodiac sector.
Next Full Moon is the Beaver Moon of November 2011 after 22 days on 10 November 2011 at 20:16.
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 3.4% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1861" and ∠1927".
The Moon is 21 days old and navigating through the last part of the current synodic month. This is lunation 145 of Meeus index or 1098 from Brown series.
The length of this lunation is 29 days, 8 hours and 47 minutes and it is 1 hour and 27 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 3 hours and 57 minutes shorter than the mean synodic month length. It is 2 hours and 12 minutes 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 ∠350.1° and at the beginning of the next lunar synodic month the true anomaly is going to be ∠5.3°.
7 days since point of apogee on 12 October 2011 at 11:43 in ♈ Aries 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 26 October 2011 at 12:26 in ♎ Libra.
The Moon is 385 089 km (239 283 mi) away from Earth and getting closer over the next 7 days until the point perigee when Earth-Moon distance is going to be 357 051 km (221 861 mi).
2 days after descending node on 16 October 2011 at 21:01 in ♊ Gemini the Moon is positioned south of the ecliptic over the following 10 days until the lunar crosses the ecliptic again from South to North in ascending node on 29 October 2011 at 14:59 in ♐ Sagittarius.
2 days since the last northern standstill on 17 October 2011 at 02:06 in ♊ Gemini when the Moon has reached North declination of ∠22.665° the lunar orbit is extending southward over the next 10 days to face maximum declination of ∠-22.609° at the point of next southern standstill on 29 October 2011 at 20:17 in ♐ Sagittarius.
17 days since the beginning of this draconic month in ♐ Sagittarius the Moon is navigating from the second to the final part of the lunar cycle.
In 7 days on 26 October 2011 at 19:56 in ♎ Libra 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