First Quarter on

Moon phase on 29 August 2017 Tuesday is First Quarter, 7 days young Moon is in Sagittarius.

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Moon phase for

Lunar calendar 2017 | August 2017

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

First Quarter 51% illuminated

First Quarter is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 51% and growing larger. The 7 days young Moon is in ♐ Sagittarius.

* The exact date and time of this First Quarter phase is on 29 August 2017 at 08:13 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 noon and sets at midnight. It is visible high in the southern sky in early evening.

Moon in ♐ Sagittarius

Moon is passing about ∠8° of ♐ Sagittarius tropical zodiac sector.

Apparent angular diameter ∠1770"

Lunar disc appears visually 7.1% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1770" and ∠1900".

Harvest Moon after 7 days

Next Full Moon is the Harvest Moon of September 2017 after 7 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 218 / 1171

The Moon is 7 days young. Earth's natural satellite is moving through the first part of current synodic month. This is lunation 218 of Meeus index or 1171 from Brown series.

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Synodic month length 29.46 days

Length of current 218 lunation is 29 days, 11 hours and 1 minute. It is 2 hours and 42 minutes shorter than next lunation 219 length.

Lunation length shorter than mean

Length of current synodic month is 1 hour and 44 minutes shorter than the mean length of synodic month, but it is still 4 hours and 25 minutes longer, compared to 21st century shortest.

Lunar orbit position on

True anomaly ∠49.5°

This New Moon true anomaly is ∠49.5°. At beginning of next synodic month true anomaly will be ∠79°. The length of upcoming synodic months will keep increasing since the true anomaly gets closer to the value of New Moon at point of apogee (∠180°).

Moon before apogee

10 days after point of perigee on 18 August 2017 at 13:14 in ♋ Cancer. The lunar orbit is getting wider, while the Moon is moving outward the Earth. It will keep this direction for the next day, until it get to the point of next apogee on 30 August 2017 at 11:25 in ♐ Sagittarius.

Previous perigeeNext apogee

Distance to Moon 404 863 km

Moon is 404 863 km (251 570 mi) away from Earth on this date. Moon moves farther next day until apogee, when Earth-Moon distance will reach 404 307 km (251 225 mi).

Moon before descending node

8 days after its ascending node on 21 August 2017 at 10:34 in ♌ Leo, the Moon is following the northern part of its orbit for the next 6 days, until it will cross the ecliptic from North to South in descending node on 4 September 2017 at 18:41 in ♒ Aquarius.

Previous nodeNext node

Draconic month

8 days after beginning of current draconic month in ♌ Leo, the Moon is moving from the beginning to the first part of it.

PreviousCurrent draconic monthNext

Moon before southern standstill

11 days after previous North standstill on 18 August 2017 at 06:50 in ♋ Cancer, when Moon has reached northern declination of ∠19.381°. Next 2 days the lunar orbit moves southward to face South declination of ∠-19.393° in the next southern standstill on 1 September 2017 at 02:03 in ♑ Capricorn.

Previous standstillNext standstill

Syzygy in 7 days

After 7 days on 6 September 2017 at 07:03 in ♓ Pisces, the Moon will be in Full Moon geocentric opposition with the Sun and this alignment forms next Sun-Earth-Moon syzygy.

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