Quarter ♊ Gemini
First Quarter is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 45% and growing larger. The 7 days young Moon is in ♊ Gemini.
* The exact date and time of this First Quarter phase is on 12 March 2011 at 23:45 UTC.
Moon rises at noon and sets at midnight. It is visible high in the southern sky in early evening.
Moon is passing about ∠16° of ♊ Gemini tropical zodiac sector.
Lunar disc appears visually 4.5% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1847" and ∠1931".
Next Full Moon is the Worm Moon of March 2011 after 7 days on 19 March 2011 at 18:10.
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.
The Moon is 7 days young. Earth's natural satellite is moving through the first part of current synodic month. This is lunation 138 of Meeus index or 1091 from Brown series.
Length of current 138 lunation is 29 days, 17 hours and 46 minutes. It is 1 hour and 28 minutes longer than next lunation 139 length.
Length of current synodic month is 5 hours and 2 minutes longer than the mean length of synodic month, but it is still 2 hours and 1 minute shorter, compared to 21st century longest.
This lunation true anomaly is ∠167°. At the beginning of next synodic month true anomaly will be ∠190.9°. The length of upcoming synodic months will keep decreasing since the true anomaly gets closer to the value of New Moon at point of perigee (∠0° or ∠360°).
6 days after point of apogee on 6 March 2011 at 07:50 in ♈ Aries. 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 19 March 2011 at 19:09 in ♍ Virgo.
Moon is 388 167 km (241 196 mi) away from Earth on this date. Moon moves closer next 7 days until perigee, when Earth-Moon distance will reach 356 578 km (221 567 mi).
13 days after its ascending node on 26 February 2011 at 20:19 in ♐ Sagittarius, the Moon is following the northern part of its orbit for the next day, until it will cross the ecliptic from North to South in descending node on 13 March 2011 at 11:55 in ♊ Gemini.
13 days after beginning of current draconic month in ♐ Sagittarius, the Moon is moving from the first to the middle part of it.
At 17:06 on this date the Moon is meeting its North standstill point, when it will reach northern declination of ∠23.825°. Next 12 days the lunar orbit will move in opposite southward direction to face South declination of ∠-23.716° in its southern standstill point on 25 March 2011 at 05:02 in ♐ Sagittarius.
After 7 days on 19 March 2011 at 18:10 in ♍ Virgo, the Moon will be in Full Moon geocentric opposition with the Sun and this alignment forms next Sun-Earth-Moon syzygy.