21.

Conjunction of Venus and Ceres Venus and Ceres share the same right ascension, at a separation of 3°05'. Fri, 28 Dec 2018 at 18:29 PDT (2,377 days ago) in Libra

22.

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 (2,377 days ago) in Monoceros

23.

Venus at perihelion Venus passes its orbit's closest point to the Sun. Wed, 26 Dec 2018 at 05:33 PDT (2,379 days ago) in Libra

24.

Close approach of the Moon and M44 The Moon and M44 pass close to each other. Mon, 24 Dec 2018 at 21:17 PDT (2,381 days ago) in Cancer

25.

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 01:49 PDT (2,381 days ago) in Gemini

26.

Ursid meteor shower 2018 The Ursid meteor shower reaches its peak. Sat, 22 Dec 2018 (2,383 days ago) in Ursa Minor

27.

Full Moon The Moon reaches full phase and is visible for much of the night. Sat, 22 Dec 2018 at 09:48 PDT (2,383 days ago) in Orion

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 18:21 PDT (2,384 days ago) in Taurus

29.

December solstice 21 December will be the shortest day of 2018 in the northern hemisphere. Fri, 21 Dec 2018 at 14:16 PDT (2,384 days ago) in Sagittarius

30.

Conjunction of Jupiter and Mercury Jupiter and Mercury share the same right ascension, at a separation of 52'. Fri, 21 Dec 2018 at 06:40 PDT (2,384 days ago) in Ophiuchus

31.

December Leonis Minorid meteor shower 2018 The December Leonis Minorid meteor shower reaches its peak. Wed, 19 Dec 2018 (2,385 days ago) in Leo Minor

32.

Asteroid 433 Eros at opposition Asteroid 433 Eros makes closest approach to the Earth. Mon, 17 Dec 2018 at 11:10 PDT (2,388 days ago) in Camelopardalis

33.

Comae Berenicid meteor shower 2018 The Comae Berenicid meteor shower reaches its peak. Sat, 15 Dec 2018 (2,389 days ago) in Leo

34.

Venus at highest altitude in morning sky Venus is bright and well placed in the dawn sky. Sat, 15 Dec 2018 (2,389 days ago) in Libra

35.

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 (2,390 days ago) in Orion

36.

The Orion Nebula is well placed The Orion Nebula (M42; mag 4.0) culminates at around midnight local time. Sat, 15 Dec 2018 (2,390 days ago) in Orion

37.

Mercury at greatest elongation west Mercury is bright and well placed in the dawn sky. Sat, 15 Dec 2018 at 07:27 PDT (2,390 days ago) in Scorpius

38.

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 03:49 PDT (2,390 days ago) in Aquarius

39.

Close approach of the Moon and Mars The Moon and Mars pass close to each other. Fri, 14 Dec 2018 at 17:51 PDT (2,391 days ago) in Aquarius

40.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 3°33'. Fri, 14 Dec 2018 at 15:21 PDT (2,391 days ago) in Aquarius