21.

Mercury at greatest elongation west Mercury is bright and well placed in the dawn sky. Sat, 15 Dec 2018 at 10:27 EDT (1,953 days ago) in Scorpius

22.

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 (1,953 days ago) in Orion

23.

The Orion Nebula is well placed The Orion Nebula (M42; mag 4.0) culminates at around midnight local time. Sat, 15 Dec 2018 (1,953 days ago) in Orion

24.

Comae Berenicid meteor shower 2018 The Comae Berenicid meteor shower reaches its peak. Sun, 16 Dec 2018 (1,952 days ago) in Leo

25.

December Leonis Minorid meteor shower 2018 The December Leonis Minorid meteor shower reaches its peak. Thu, 20 Dec 2018 (1,948 days ago) in Leo Minor

26.

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 (1,947 days ago) in Ophiuchus

27.

December solstice 21 December will be the shortest day of 2018 in the northern hemisphere. Fri, 21 Dec 2018 at 17:16 EDT (1,947 days ago) in Sagittarius

28.

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 (1,947 days ago) in Taurus

29.

Full Moon The Moon reaches full phase and is visible for much of the night. Sat, 22 Dec 2018 at 12:48 EDT (1,946 days ago) in Orion

30.

Ursid meteor shower 2018 The Ursid meteor shower reaches its peak. Sat, 22 Dec 2018 (1,946 days ago) in Ursa Minor

31.

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 (1,944 days ago) in Gemini

32.

Close approach of the Moon and M44 The Moon and M44 pass close to each other. Tue, 25 Dec 2018 at 00:17 EDT (1,943 days ago) in Cancer

33.

Venus at perihelion Venus passes its orbit's closest point to the Sun. Wed, 26 Dec 2018 at 08:33 EDT (1,942 days ago) in Libra

34.

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 (1,940 days ago) in Monoceros

35.

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 (1,939 days ago) in Virgo

36.

Asteroid 6 Hebe at opposition Asteroid 6 Hebe makes closest approach to the Earth. Sat, 29 Dec 2018 at 11:46 EDT (1,939 days ago) in Monoceros

37.

Conjunction of Venus and Ceres Venus and Ceres share the same right ascension, at a separation of 3°01'. Sat, 29 Dec 2018 at 15:26 EDT (1,939 days ago) in Libra

38.

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 (1,939 days ago) in Monoceros

39.

Conjunction of the Moon and Venus The Moon and Venus share the same right ascension, at a separation of 1°16'. Tue, 01 Jan 2019 at 16:48 EDT (1,936 days ago) in Libra

40.

Close approach of the Moon and Venus The Moon and Venus pass close to each other. Tue, 01 Jan 2019 at 17:33 EDT (1,936 days ago) in Libra