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

First Quarter in Gemini

First Quarter on . The illuminated surface of the moon is 55% and growing larger. The lunar cycle is 8 days young.

* The exact date and time of this First Quarter phase is on 16 February 2005 at 00:16 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 is entering ♊ Gemini

Moon is passing first ∠3° of ♊ Gemini tropical zodiac sector.

Snow Moon after 7 days

Next Full Moon is the Snow Moon of February 2005 after 7 days on 24 February 2005 at 04:54.

Moderate tide

There is medium ocean tide on this date. Sun and Moon gravitational forces are not aligned, but meet at very acute angle, so their combined tidal force is moderate.

Apparent angular diameter ∠1802"

Lunar disc appears visually 7.4% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1802" and ∠1942".

Lunation 63 / 1016

The Moon is 8 days young and navigating through the first part of the current synodic month. This is lunation 63 of Meeus index or 1016 from Brown series.

Synodic month length 29.45 days

The length of this lunation is 29 days, 10 hours and 42 minutes and it is 40 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 shorter than mean

The length of the current synodic month is 2 hours and 2 minutes shorter than the mean synodic month length. It is 4 hours and 7 minutes longer compared to 21st century's shortest synodic month length.

Lunar orbit details for

True anomaly ∠17.1°

The true anomaly of the Moon orbit at the beginning of this lunation cycle is ∠17.1° and at the beginning of the next lunar synodic month the true anomaly is going to be ∠36.2°.

Moon before apogee

8 days since point of perigee on 7 February 2005 at 22:09 in ♑ Capricorn the lunar orbit is getting widen while the Moon is moving away from the Earth. It will keep this direction over the next 3 days until the Moon reaches the point of next apogee on 20 February 2005 at 04:59 in ♋ Cancer.

Distance to Moon 397 681 km

The Moon is 397 681 km (247 108 mi) away from Earth and getting further over the next 3 days until the point apogee when Earth-Moon distance is going to be 405 806 km (252 156 mi).

Moon after ascending node

3 days after ascending node on 13 February 2005 at 10:25 in ♈ Aries 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 28 February 2005 at 00:10 in ♎ Libra.

Moon before northern standstill

10 days since the last southern standstill on 5 February 2005 at 21:10 in ♐ Sagittarius when the Moon has reached South declination of ∠-28.071° the lunar orbit is extending northward over the next 2 days to face maximum declination of ∠28.152° at the point of next northern standstill on 19 February 2005 at 01:13 in ♋ Cancer.

Draconic month

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

Syzygy in 7 days

In 7 days on 24 February 2005 at 04:54 in ♍ Virgo 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