21.

Ursid meteor shower 2020 The Ursid meteor shower reaches its peak. Tue, 22 Dec 2020 (1,212 days ago) in Ursa Minor

22.

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. Mon, 21 Dec 2020 at 18:41 EDT (1,213 days ago) in Pisces

23.

Great conjunction of Jupiter and Saturn Jupiter and Saturn will make their closest approach since the year 1623. Mon, 21 Dec 2020 at 13:20 EDT (1,213 days ago) in Capricornus

24.

Conjunction of Jupiter and Saturn Jupiter and Saturn share the same right ascension, at a separation of 6'15". Mon, 21 Dec 2020 at 08:34 EDT (1,213 days ago) in Capricornus

25.

December solstice 21 December will be the shortest day of 2020 in the northern hemisphere. Mon, 21 Dec 2020 at 04:55 EDT (1,213 days ago) in Sagittarius

26.

Mercury at superior solar conjunction Mercury passes around the far side of the Sun. Sat, 19 Dec 2020 at 22:40 EDT (1,215 days ago) in Sagittarius

27.

December Leonis Minorid meteor shower 2020 The December Leonis Minorid meteor shower reaches its peak. Sat, 19 Dec 2020 (1,215 days ago) in Leo Minor

28.

Comet 141P/Machholz passes perihelion Comet 141P/Machholz makes its closest approach to the Sun. Thu, 17 Dec 2020 (1,217 days ago) in Aquarius

29.

Close approach of the Moon, Jupiter and Saturn The Moon, Jupiter and Saturn pass close to one another. Thu, 17 Dec 2020 at 01:05 EDT (1,217 days ago) in Capricornus

30.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 3°03'. Thu, 17 Dec 2020 at 00:19 EDT (1,217 days ago) in Capricornus

31.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Thu, 17 Dec 2020 at 00:12 EDT (1,217 days ago) in Sagittarius

32.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 2°55'. Wed, 16 Dec 2020 at 23:30 EDT (1,217 days ago) in Sagittarius

33.

Mercury at aphelion Mercury passes the furthest point along its orbit from the Sun. Tue, 15 Dec 2020 at 21:27 EDT (1,219 days ago) in Ophiuchus

34.

The Orion Nebula is well placed The Orion Nebula (M42; mag 4.0) culminates at around midnight local time. Tue, 15 Dec 2020 (1,219 days ago) in Orion

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. Tue, 15 Dec 2020 (1,219 days ago) in Orion

36.

Comae Berenicid meteor shower 2020 The Comae Berenicid meteor shower reaches its peak. Tue, 15 Dec 2020 (1,219 days ago) in Leo

37.

The Moon at perihelion The Moon passes its orbit's closest point to the Sun, which happens each month around the time of new moon. Tue, 15 Dec 2020 at 09:03 EDT (1,219 days ago) in Sagittarius

38.

New Moon The Moon disappears into the Sun's glare for a few days. Mon, 14 Dec 2020 at 11:17 EDT (1,220 days ago) in Ophiuchus

39.

Total solar eclipse There will be an eclipse of the Sun, visible from Argentina and Chile. Mon, 14 Dec 2020 at 11:14 EDT (1,220 days ago) in Ophiuchus

40.

Geminid meteor shower 2020 The Geminid meteor shower reaches its peak. Sun, 13 Dec 2020 (1,220 days ago) in Gemini