Last Quarter Moon
Last Quarter MoonImage credit: NASA/Goddard Space Flight Center Scientific Visualization Studio.(large image)

Last Quarter in Taurus

Last Quarter on . Illuminated surface of the Moon is 45% and getting smaller. Lunar cycle is 22 days old.

* The exact date and time of this Last Quarter phase is on 15 August 2017 at 01:15 UTC.

Moonrise and moonset

Moon rises at midnight and sets at noon. It is visible to the south in the morning.

Upcoming main moon phases

Main moon phases of the following lunar cycle.

Moon phase and lunation details

Moon in ♉ Taurus

Moon is leaving the last ∠1° of ♉ Taurus tropical zodiac sector and will enter ♊ Gemini later.

Harvest Moon after 21 days

Next Full Moon is the Harvest Moon of September 2017 after 21 days on 6 September 2017 at 07:03.

Neap tide

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.

Apparent angular diameter ∠1966"

Lunar disc appears visually 3.7% wider than solar disc. Moon and Sun apparent angular diameters are ∠1966" and ∠1895".

Lunation 217 / 1170

The Moon is 22 days old and navigating through the last part of the current synodic month. This is lunation 217 of Meeus index or 1170 from Brown series.

Synodic month length 29.36 days

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°).

Lunation length shorter than mean

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.

Lunar orbit details for

True anomaly ∠27.9°

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°.

Moon before perigee

12 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 3 days until the Moon reaches the point of next perigee on 18 August 2017 at 13:14 in ♋ Cancer.

Distance to Moon 364 581 km

The Moon is 364 581 km (226 540 mi) away from Earth and getting closer over the next 3 days until the point perigee when Earth-Moon distance is going to be 366 129 km (227 502 mi).

Moon before ascending node

7 days after descending node on 8 August 2017 at 10:56 in ♒ Aquarius the Moon is positioned south of the ecliptic over the following 5 days until the lunar crosses the ecliptic again from South to North in ascending node on 21 August 2017 at 10:34 in ♌ Leo.

Moon before northern standstill

10 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 2 days to face maximum declination of ∠19.381° at the point of next northern standstill on 18 August 2017 at 06:50 in ♋ Cancer.

Draconic month

21 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.

Syzygy in 6 days

In 6 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.

Lunar calendar

Sources and credits

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