Waning Gibbous on . The illuminated surface of the moon is 77% 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 about ∠17° of ♈ Aries tropical zodiac sector.
Previous main lunar phase is the Full Moon before 4 days on 7 August 2017 at 18:11.
Next Full Moon is the Harvest Moon of September 2017 after 24 days on 6 September 2017 at 07:03.
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 1.2% wider than solar disc. Moon and Sun apparent angular diameters are ∠1917" and ∠1894".
The Moon is 19 days old and navigating from the middle to the last part of the current synodic month. This is lunation 217 of Meeus index or 1170 from Brown series.
The length of this lunation is 29 days, 8 hours and 45 minutes and it is 2 hours and 15 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 59 minutes shorter than the mean synodic month length. It is 2 hours and 10 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 ∠27.9° and at the beginning of the next lunar synodic month the true anomaly is going to be ∠49.5°.
9 days since point of apogee on 2 August 2017 at 17:55 in ♐ Sagittarius the lunar orbit is getting narrow while the Moon is moving towards the Earth. It will keep this direction over the next 6 days until the Moon reaches the point of next perigee on 18 August 2017 at 13:14 in ♋ Cancer.
The Moon is 373 909 km (232 336 mi) away from Earth and getting closer over the next 6 days until the point perigee when Earth-Moon distance is going to be 366 129 km (227 502 mi).
4 days after descending node on 8 August 2017 at 10:56 in ♒ Aquarius the Moon is positioned south of the ecliptic over the following 8 days until the lunar crosses the ecliptic again from South to North in ascending node on 21 August 2017 at 10:34 in ♌ Leo.
7 days since the last southern standstill on 4 August 2017 at 18:17 in ♑ Capricorn when the Moon has reached South declination of ∠-19.393° the lunar orbit is extending northward over the next 5 days to face maximum declination of ∠19.381° at the point of next northern standstill on 18 August 2017 at 06:50 in ♋ Cancer.
18 days since the beginning of this draconic month in ♍ Virgo the Moon is navigating from the second to the final part of the lunar cycle.
In 9 days on 21 August 2017 at 18:30 in ♌ Leo 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