21.

The Moon at aphelion The Moon reaches its furthest point from the Sun. Fri, 21 Dec 2018 at 21:21 EST (809 days ago) in Taurus

22.

December solstice 21 December will be the shortest day of 2018 in the northern hemisphere. Fri, 21 Dec 2018 at 17:08 EST (809 days ago) in Sagittarius

23.

Conjunction of Jupiter and Mercury Jupiter and Mercury share the same right ascension, at a separation of 0°51'. Fri, 21 Dec 2018 at 09:40 EST (809 days ago) in Ophiuchus

24.

December Leonis Minorid meteor shower 2018 The December Leonis Minorid meteor shower reaches its peak. Thu, 20 Dec 2018 (810 days ago) in Leo Minor

25.

Asteroid 433 Eros at opposition Asteroid 433 Eros is well placed for observation. Tue, 18 Dec 2018 at 16:34 EST (812 days ago) in Camelopardalis

26.

Comae Berenicid meteor shower 2018 The Comae Berenicid meteor shower reaches its peak. Sun, 16 Dec 2018 (814 days ago) in Leo

27.

Mercury at greatest elongation west Mercury is bright and well placed in the dawn sky. Sat, 15 Dec 2018 at 10:16 EST (815 days ago) in Scorpius

28.

46P/Wirtanen at perigee 46P/Wirtanen makes its closest approach to the Earth. Sat, 15 Dec 2018 (815 days ago) in Taurus

29.

46P/Wirtanen reaches its brightest 46P/Wirtanen is well placed for observation. Sat, 15 Dec 2018 (815 days ago) in Taurus

30.

Moon at First Quarter The Moon appears high in the sky at sunset and sets in the west at around midnight. Sat, 15 Dec 2018 at 06:49 EST (815 days ago) in Aquarius

31.

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 18:22 EST (816 days ago) in Aquarius

32.

Mercury reaches highest point in morning sky Mercury is bright and well placed in the dawn sky. Fri, 14 Dec 2018 (816 days ago) in Scorpius

33.

Geminid meteor shower 2018 The Geminid meteor shower reaches its peak. Fri, 14 Dec 2018 (816 days ago) in Gemini

34.

Venus reaches highest point in morning sky Venus is bright and well placed in the dawn sky. Fri, 14 Dec 2018 (816 days ago) in Libra

35.

The Moon at apogee The Moon appears small as it recedes to its furthest point from the Earth. Wed, 12 Dec 2018 at 07:24 EST (818 days ago) in Capricornus

36.

46P/Wirtanen at perihelion 46P/Wirtanen makes its closest approach to the Sun. Wed, 12 Dec 2018 (818 days ago) in Taurus

37.

σ-Hydrid meteor shower 2018 The σ-Hydrid meteor shower reaches its peak. Wed, 12 Dec 2018 (818 days ago) in Hydra

38.

Mercury at dichotomy Mercury reaches half phase in the dawn sky. Tue, 11 Dec 2018 at 07:30 EST (819 days ago) in Libra

39.

Monocerotid meteor shower 2018 The Monocerotid meteor shower reaches its peak. Sun, 09 Dec 2018 (821 days ago) in Monoceros

40.

Asteroid 40 Harmonia at opposition Asteroid 40 Harmonia is well placed for observation. Sun, 09 Dec 2018 at 02:10 EST (821 days ago) in Taurus