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

First Quarter in Scorpio

First Quarter on . The illuminated surface of the moon is 54% and growing larger. The lunar cycle is 8 days young.

* The exact date and time of this First Quarter phase is on 13 August 2005 at 02:39 UTC.

Moonrise and moonset

The moon rises at noon and sets at midnight. It is visible high in the southern sky in early evening.

Moon phases on nearby dates

Slide horizontally to discover the moon phase on nearby dates.

Upcoming main moon phases

Main moon phases of the following lunar cycle.

Moon phase and lunation details

Moon in ♏ Scorpio

Moon is leaving the last ∠4° of ♏ Scorpio tropical zodiac sector and will enter ♐ Sagittarius later.

Sturgeon Moon after 6 days

Next Full Moon is the Sturgeon Moon of August 2005 after 6 days on 19 August 2005 at 17:53.

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 ∠1896"

Lunar disc appears visually 0.1% wider than solar disc. Moon and Sun apparent angular diameters are ∠1896" and ∠1894".

Lunation 69 / 1022

The Moon is 8 days young and navigating through the first part of the current synodic month. This is lunation 69 of Meeus index or 1022 from Brown series.

Synodic month length 29.65 days

The length of this lunation is 29 days, 15 hours and 41 minutes and it is 1 minute shorter than the upcoming lunation's length. The lengths of the following synodic months are going to decrease with the lunar orbit true anomaly getting closer to the value it has at the point of New Moon at perigee (∠0° or ∠360°).

Lunation length longer than mean

The length of the current synodic month is 2 hours and 57 minutes longer than the mean synodic month length. It is 4 hours and 6 minutes shorter compared to 21st century's longest synodic month length.

Lunar orbit details for

True anomaly ∠181.9°

The true anomaly of the Moon orbit at the beginning of this lunation cycle is ∠181.9° and at the beginning of the next lunar synodic month the true anomaly is going to be ∠205.9°.

Moon before perigee

8 days since point of apogee on 4 August 2005 at 21:49 in ♌ Leo the lunar orbit is getting narrow while the Moon is moving towards the Earth. It will keep this direction over the next 5 days until the Moon reaches the point of next perigee on 19 August 2005 at 05:32 in ♒ Aquarius.

Distance to Moon 378 065 km

The Moon is 378 065 km (234 919 mi) away from Earth and getting closer over the next 5 days until the point perigee when Earth-Moon distance is going to be 357 396 km (222 076 mi).

Moon after descending node

3 days after descending node on 10 August 2005 at 07:53 in ♎ Libra the Moon is positioned south of the ecliptic over the following 9 days until the lunar crosses the ecliptic again from South to North in ascending node on 22 August 2005 at 23:05 in ♈ Aries.

Moon before southern standstill

11 days since the last northern standstill on 1 August 2005 at 18:06 in ♊ Gemini when the Moon has reached North declination of ∠28.311° the lunar orbit is extending southward over the next 2 days to face maximum declination of ∠-28.409° at the point of next southern standstill on 16 August 2005 at 03:16 in ♑ Capricorn.

Draconic month

17 days since the beginning of this draconic month in ♈ Aries the Moon is navigating from the second to the final part of the lunar cycle.

Syzygy in 6 days

In 6 days on 19 August 2005 at 17:53 in ♒ Aquarius the Moon is going to be in a Full Moon geocentric opposition with the Sun and thus forming the next Sun-Earth-Moon 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