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

First Quarter in Gemini

First Quarter on . Illuminated surface of the Moon is 49% and growing larger. Lunar cycle is 7 days young.

* The exact date and time of this First Quarter phase is on 21 March 2021 at 14:40 UTC.

Moonrise and moonset

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

Upcoming main moon phases

Main moon phases of the following lunar cycle.

Moon phase and lunation details

Moon is entering ♊ Gemini

Moon is passing first ∠0° of ♊ Gemini tropical zodiac sector.

Worm Moon after 7 days

Next Full Moon is the Worm Moon of March 2021 after 7 days on 28 March 2021 at 18:48.

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 ∠1795"

Lunar disc appears visually 7% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1795" and ∠1926".

Lunation 262 / 1215

The Moon is 7 days young and navigating through the first part of the current synodic month. This is lunation 262 of Meeus index or 1215 from Brown series.

Synodic month length 29.67 days

The length of this lunation is 29 days, 16 hours and 10 minutes and it is 19 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 longer than mean

The length of the current synodic month is 3 hours and 26 minutes longer than the mean synodic month length. It is 3 hours and 37 minutes shorter compared to 21st century's longest synodic month length.

Lunar orbit details for

True anomaly ∠124.3°

The true anomaly of the Moon orbit at the beginning of this lunation cycle is ∠124.3° and at the beginning of the next lunar synodic month the true anomaly is going to be ∠154.8°.

Moon after apogee

3 days since point of apogee on 18 March 2021 at 05:04 in ♉ Taurus the lunar orbit is getting narrow while the Moon is moving towards the Earth. It will keep this direction over the next 8 days until the Moon reaches the point of next perigee on 30 March 2021 at 06:12 in ♏ Scorpio.

Distance to Moon 399 363 km

The Moon is 399 363 km (248 153 mi) away from Earth and getting closer over the next 8 days until the point perigee when Earth-Moon distance is going to be 360 311 km (223 887 mi).

Moon after ascending node

1 day after ascending node on 20 March 2021 at 03:31 in ♊ Gemini the Moon is positioned north of the ecliptic over the following 11 days until the lunar crosses the ecliptic again from North to South in descending node on 2 April 2021 at 02:41 in ♐ Sagittarius.

Moon before northern standstill

13 days since the last southern standstill on 7 March 2021 at 20:45 in ♑ Capricorn when the Moon has reached South declination of ∠-25.161° the lunar orbit is extending northward over the next day to face maximum declination of ∠25.307° at the point of next northern standstill on 22 March 2021 at 08:35 in ♋ Cancer.

Draconic month

1 day since the beginning of this draconic month in ♊ Gemini the Moon is navigating from the beginning to the first part of the lunar cycle.

Syzygy in 7 days

In 7 days on 28 March 2021 at 18:48 in ♎ Libra 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