Waning Gibbous on . The illuminated surface of the moon is 91% and getting smaller. The lunar cycle is 17 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 leaving the last ∠4° of ♈ Aries tropical zodiac sector and will enter ♉ Taurus later.
Previous main lunar phase is the Full Moon before 3 days on 12 September 2011 at 09:27.
Next Full Moon is the Hunter Moon of October 2011 after 26 days on 12 October 2011 at 02:06.
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 7.6% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1768" and ∠1908".
The Moon is 17 days old and navigating from the middle to the last part of the current synodic month. This is lunation 144 of Meeus index or 1097 from Brown series.
The length of this lunation is 29 days, 8 hours and 5 minutes and it is 42 minutes shorter than the upcoming lunation's length. This is the year's shortest synodic month of 2011. 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 4 hours and 39 minutes shorter than the mean synodic month length. It is 1 hour and 30 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 ∠333.4° and at the beginning of the next lunar synodic month the true anomaly is going to be ∠350.1°.
Moon is at apogee at 06:23 about 15 days since last perigee on 30 August 2011 at 17:35 in ♍ Virgo the lunar orbit is going to narrow while the Moon is moving towards the Earth over the upcoming 12 days until point of next perigee on 28 September 2011 at 01:01 in ♎ Libra.
This apogee Moon is 406 068 km (252 319 mi) away from Earth. It is 660 km further than the mean apogee distance, but it is still 641 km closer than the farthest apogee of 21st century.
10 days after ascending node on 5 September 2011 at 07:36 in ♐ Sagittarius the Moon is positioned north of the ecliptic over the following 4 days until the lunar crosses the ecliptic again from North to South in descending node on 19 September 2011 at 19:38 in ♊ Gemini.
10 days since the last southern standstill on 5 September 2011 at 05:01 in ♐ Sagittarius when the Moon has reached South declination of ∠-23.047° the lunar orbit is extending northward over the next 4 days to face maximum declination of ∠22.890° at the point of next northern standstill on 19 September 2011 at 20:05 in ♊ Gemini.
10 days since the beginning of this draconic month in ♐ Sagittarius the Moon is navigating from the beginning to the first part of the lunar cycle.
In 11 days on 27 September 2011 at 11:09 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