21.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 4°11'. Tue, 07 Dec 2021 at 20:49 EDT (864 days ago) in Capricornus

22.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Tue, 07 Dec 2021 at 22:28 EDT (864 days ago) in Capricornus

23.

Monocerotid meteor shower 2021 The Monocerotid meteor shower reaches its peak. Wed, 08 Dec 2021 (862 days ago) in Monoceros

24.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 4°28'. Thu, 09 Dec 2021 at 01:10 EDT (862 days ago) in Capricornus

25.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Thu, 09 Dec 2021 at 03:49 EDT (862 days ago) in Capricornus

26.

Asteroid 44 Nysa at opposition Asteroid 44 Nysa makes closest approach to the Earth. Fri, 10 Dec 2021 at 06:58 EDT (861 days ago) in Taurus

27.

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. Fri, 10 Dec 2021 at 20:36 EDT (861 days ago) in Aquarius

28.

σ-Hydrid meteor shower 2021 The σ-Hydrid meteor shower reaches its peak. Sat, 11 Dec 2021 (859 days ago) in Hydra

29.

Comet C/2021 A1 (Leonard) passes perigee Comet C/2021 A1 (Leonard) makes its closest approach to the Earth. Sun, 12 Dec 2021 (859 days ago) in Ophiuchus

30.

The Large Magellanic Cloud is well placed The Milky Way's dwarf companion, the Large Magellanic Cloud (LMC; mag 0.9), in Dorado culminates at around midnight local time. Sun, 12 Dec 2021 (859 days ago) in Dorado

31.

Conjunction of Venus and Pluto Venus and Pluto share the same right ascension, at a separation of 20'. Mon, 13 Dec 2021 at 01:37 EDT (858 days ago) in Sagittarius

32.

Geminid meteor shower 2021 The Geminid meteor shower reaches its peak. Tue, 14 Dec 2021 (857 days ago) in Gemini

33.

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. Wed, 15 Dec 2021 (856 days ago) in Orion

34.

The Orion Nebula is well placed The Orion Nebula (M42; mag 4.0) culminates at around midnight local time. Wed, 15 Dec 2021 (856 days ago) in Orion

35.

Comae Berenicid meteor shower 2021 The Comae Berenicid meteor shower reaches its peak. Wed, 15 Dec 2021 (855 days ago) in Leo

36.

The Moon at apogee The Moon recedes to its orbit's furthest point from the Earth, making it appear fractionally smaller than at other times of the month. Fri, 17 Dec 2021 at 21:14 EDT (854 days ago) in Taurus

37.

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. Sat, 18 Dec 2021 at 01:57 EDT (853 days ago) in Taurus

38.

Full Moon The Moon reaches full phase and is visible for much of the night. Sat, 18 Dec 2021 at 23:35 EDT (852 days ago) in Taurus

39.

December Leonis Minorid meteor shower 2021 The December Leonis Minorid meteor shower reaches its peak. Sun, 19 Dec 2021 (852 days ago) in Leo Minor

40.

December solstice 21 December will be the shortest day of 2021 in the northern hemisphere. Tue, 21 Dec 2021 at 10:53 EDT (850 days ago) in Sagittarius