341.

Close approach of the Moon and Mars The Moon and Mars pass close to each other. Fri, 14 Dec 2018 at 20:51 EDT (2,021 days ago) in Aquarius

342.

Moon at First Quarter The Moon reaches first quarter phase – appearing high in the sky at sunset and setting in the west at around midnight. Sat, 15 Dec 2018 at 06:49 EDT (2,020 days ago) in Aquarius

343.

Mercury at greatest elongation west Mercury is bright and well placed in the dawn sky. Sat, 15 Dec 2018 at 10:27 EDT (2,020 days ago) in Scorpius

344.

The Running Man cluster is well placed The Running Man cluster NGC 1977 (mag 4.2) in Orion's sword culminates at around midnight local time. Sat, 15 Dec 2018 (2,020 days ago) in Orion

345.

The Orion Nebula is well placed The Orion Nebula (M42; mag 4.0) culminates at around midnight local time. Sat, 15 Dec 2018 (2,020 days ago) in Orion

346.

Comae Berenicid meteor shower 2018 The Comae Berenicid meteor shower reaches its peak. Sun, 16 Dec 2018 (2,019 days ago) in Leo

347.

December Leonis Minorid meteor shower 2018 The December Leonis Minorid meteor shower reaches its peak. Thu, 20 Dec 2018 (2,015 days ago) in Leo Minor

348.

Conjunction of Jupiter and Mercury Jupiter and Mercury share the same right ascension, at a separation of 52'. Fri, 21 Dec 2018 at 09:40 EDT (2,014 days ago) in Ophiuchus

349.

December solstice 21 December will be the shortest day of 2018 in the northern hemisphere. Fri, 21 Dec 2018 at 17:16 EDT (2,014 days ago) in Sagittarius

350.

The Moon at aphelion The Moon recedes to its orbit's furthest point from the Sun, which happens each month around the time of full moon. Fri, 21 Dec 2018 at 21:21 EDT (2,014 days ago) in Taurus

351.

Full Moon The Moon reaches full phase and is visible for much of the night. Sat, 22 Dec 2018 at 12:48 EDT (2,013 days ago) in Orion

352.

Ursid meteor shower 2018 The Ursid meteor shower reaches its peak. Sat, 22 Dec 2018 (2,013 days ago) in Ursa Minor

353.

The Moon at perigee The Moon makes its monthly closest approach to the Earth, making it appear fractionally larger than at other times of the month. Mon, 24 Dec 2018 at 04:49 EDT (2,011 days ago) in Gemini

354.

Close approach of the Moon and M44 The Moon and M44 pass close to each other. Tue, 25 Dec 2018 at 00:17 EDT (2,010 days ago) in Cancer

355.

Venus at perihelion Venus passes its orbit's closest point to the Sun. Wed, 26 Dec 2018 at 08:33 EDT (2,009 days ago) in Libra

356.

The cluster NGC 2232 is well placed The open star cluster NGC 2232 (mag 4.2) in Monoceros culminates at around midnight local time. Fri, 28 Dec 2018 (2,007 days ago) in Monoceros

357.

Moon at Last Quarter The Moon reaches last quarter phase – rising in the east at around midnight and appearing high in the sky by sunrise. Sat, 29 Dec 2018 at 04:34 EDT (2,006 days ago) in Virgo

358.

Asteroid 6 Hebe at opposition Asteroid 6 Hebe makes closest approach to the Earth. Sat, 29 Dec 2018 at 11:46 EDT (2,006 days ago) in Monoceros

359.

Conjunction of Venus and Ceres Venus and Ceres share the same right ascension, at a separation of 3°02'. Sat, 29 Dec 2018 at 14:39 EDT (2,006 days ago) in Libra

360.

The Rosette Nebula is well placed The Rosette Nebula (C49; mag 9.0) in Monoceros culminates at around midnight local time. Sat, 29 Dec 2018 (2,006 days ago) in Monoceros