Last Quarter on

Moon phase on 15 August 2017 Tuesday is Last Quarter, 22 days old Moon is in Taurus.

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Moon phase for

Lunar calendar 2017 | August 2017

Last Quarter phase
Last Quarter phase
Image credit: NASA/Goddard Space Flight Center Scientific Visualization Studio.

Last Quarter 45% illuminated

Last Quarter is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 45% and getting smaller. The 22 days old Moon is in ♉ Taurus.

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

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Moon phases for next 7 days

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Moon phase and lunation details

Moonrise and moonset

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

Moon in ♉ Taurus

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

Apparent angular diameter ∠1966"

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

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.

Upcoming main Moon phases

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.

Lunation 217 / 1170

The Moon is 22 days old. Earth's natural satellite is moving through the last part of current synodic month. This is lunation 217 of Meeus index or 1170 from Brown series.

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Synodic month length 29.36 days

The length of the lunation is 29 days, 8 hours and 45 minutes. It is 2 hours and 15 minutes shorter than the next lunation's length. The lengths of the following synodic months are going to increasing with the 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 position on

True anomaly ∠27.9°

At the beginning of the lunation cycle the true anomaly is ∠27.9°. At the beginning of next synodic month the true anomaly is going to be ∠49.5°.

Moon before apogee

12 days after 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.

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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 located south of the ecliptic over the following 5 days, until the lunar orbit crosses from South to North in ascending node on 21 August 2017 at 10:34 in ♌ Leo.

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Draconic month

21 days since the beginning of current draconic month in ♍ Virgo, the Moon is navigating from the second to the final part of the cycle.

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Moon before northern standstill

10 days since the previous 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.

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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.

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