Full Moon is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 100%.
Moon rises at sunset and sets at sunrise. It is visible all night and it is high in the sky around midnight.
Lunar disc appears visually 9.3% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1777" and ∠1950".
The Full Moon on this date is the Cold Moon of December.
Moon is leaving the last ∠4° of Gemini tropical zodiac sector and enters Cancer later.
There is high Full Moon ocean tide on this date. Combined Sun and Moon gravitational tidal force working on Earth is strong, because of the Sun-Earth-Moon syzygy alignment.
Moon is 15 days old. Earth's natural satellite is moving through the middle part of current synodic month. This is lunation 172 of Meeus index or 1125 from Brown series.
Length of current 172 lunation is 29 days, 10 hours and 52 minutes. It is 28 minutes longer than next lunation 173. This is the shortest synodic month of 2013.
Length of current synodic month is 1 hour and 52 minutes shorter than the mean length of synodic month, but it is still 4 hours and 17 minutes longer, compared to 21st century shortest.
This lunation true anomaly is ∠336.4°. At the beginning of next synodic month true anomaly is ∠353°. The length of upcoming synodic months decreases since the true anomaly gets closer to the value of New Moon at point of perigee (∠0°or∠360°).
13 days after point of perigee on 4 December 2013 at 10:15, lunar orbit gets wider while the Moon moves outward the Earth. It keeps this direction for next 2 days until it gets to the point of apogee on 19 December 2013 at 23:49.
Moon is 403 451 km (250 693 mi) away from Earth on this date. At previous perigee point before 13 days, distance is 360 065 km (223 734 mi). Moon moves farther next 2 days until apogee, when Earth-Moon distance reaches 406 269 km (252 444 mi).
4 days after its descending node on 13 December 2013 at 10:10, the Moon follows the southern part of its orbit for the next 10 days untill it crosses the ecliptic from South to North in ascending node on 28 December 2013 at 00:21.
16 days after its beginning, the Moon is moving from the second to the final part of current draconic month.
At 01:00 on this date Moon meets its North standstill point and reaches northern declination of ∠19.570°. Next 13 days lunar orbit moves southward in opposite direction to face South declination of ∠-19.537° in its southern standstill point on 31 December 2013 at 04:49.
The Moon is in Full Moon opposition with the Sun on this date and this alignment forms Sun-Earth-Moon syzygy.