First Quarter on

Moon phase on 23 August 2015 Sunday is First Quarter, 8 days young Moon is in Sagittarius.

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Moon phase for

Lunar calendar 2015 | August 2015

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

First Quarter 57% illuminated

First Quarter is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 57% and growing larger. The 8 days young Moon is in ♐ Sagittarius.

* The exact date and time of this First Quarter phase is on 22 August 2015 at 19:31 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 ∠1833"

Lunar disc appears visually 3.5% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1833" and ∠1898".

Sturgeon Moon after 6 days

Next Full Moon is the Sturgeon Moon of August 2015 after 6 days on 29 August 2015 at 18:35.

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 193 / 1146

The Moon is 8 days young. Earth's natural satellite is moving through the first part of current synodic month. This is lunation 193 of Meeus index or 1146 from Brown series.

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Synodic month length 29.66 days

Length of current 193 lunation is 29 days, 15 hours and 48 minutes. It is 1 hour and 36 minutes shorter than next lunation 194 length.

Lunation length longer than mean

Length of current synodic month is 3 hours and 4 minutes longer than the mean length of synodic month, but it is still 3 hours and 59 minutes shorter, compared to 21st century longest.

Lunar orbit position on

True anomaly ∠144.1°

This New Moon true anomaly is ∠144.1°. At beginning of next synodic month true anomaly will be ∠169.3°. 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 after apogee

5 days after point of apogee on 18 August 2015 at 02:33 in ♎ Libra. The lunar orbit is getting closer, while the Moon is moving inward the Earth. It will keep this direction for the next 7 days, until it get to the point of next perigee on 30 August 2015 at 15:24 in ♓ Pisces.

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Distance to Moon 391 038 km

Moon is 391 038 km (242 980 mi) away from Earth on this date. Moon moves closer next 7 days until perigee, when Earth-Moon distance will reach 358 289 km (222 630 mi).

Moon after ascending node

5 days after its ascending node on 17 August 2015 at 23:05 in ♍ Virgo, the Moon is following the northern part of its orbit for the next 7 days, until it will cross the ecliptic from North to South in descending node on 31 August 2015 at 10:16 in ♈ Aries.

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Draconic month

5 days after beginning of current draconic month in ♍ Virgo, the Moon is moving from the beginning to the first part of it.

PreviousCurrent draconic monthNext

Moon before southern standstill

13 days after previous North standstill on 10 August 2015 at 11:11 in ♊ Gemini, when Moon has reached northern declination of ∠18.288°. Next day the lunar orbit moves southward to face South declination of ∠-18.206° in the next southern standstill on 25 August 2015 at 03:44 in ♐ Sagittarius.

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Syzygy in 6 days

After 6 days on 29 August 2015 at 18:35 in ♒ Aquarius, 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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