21.

December solstice 22 December will be the shortest day of 2019 in the northern hemisphere. Sat, 21 Dec 2019 at 23:12 EDT (1,698 days ago) in Sagittarius

22.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 3°31'. Sun, 22 Dec 2019 at 20:48 EDT (1,698 days ago) in Libra

23.

Ursid meteor shower 2019 The Ursid meteor shower reaches its peak. Sun, 22 Dec 2019 (1,697 days ago) in Ursa Minor

24.

Close approach of the Moon and Mars The Moon and Mars pass close to each other. Sun, 22 Dec 2019 at 22:51 EDT (1,698 days ago) in Libra

25.

Jupiter at apogee Jupiter reaches its furthest point from the Earth, as it passes around the far side of the Sun. Wed, 25 Dec 2019 at 16:56 EDT (1,695 days ago) in Sagittarius

26.

New Moon The Moon disappears into the Sun's glare for a few days. Thu, 26 Dec 2019 at 00:14 EDT (1,694 days ago) in Sagittarius

27.

Annular solar eclipse There will be an eclipse of the Sun, visible from Asia. Thu, 26 Dec 2019 at 00:17 EDT (1,694 days ago) in Sagittarius

28.

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. Thu, 26 Dec 2019 at 14:57 EDT (1,694 days ago) in Sagittarius

29.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 1°12'. Fri, 27 Dec 2019 at 06:48 EDT (1,693 days ago) in Sagittarius

30.

Jupiter at solar conjunction Jupiter is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Fri, 27 Dec 2019 at 13:14 EDT (1,693 days ago) in Sagittarius

31.

Conjunction of the Moon and Venus The Moon and Venus share the same right ascension, at a separation of 59'. Sat, 28 Dec 2019 at 20:32 EDT (1,692 days ago) in Capricornus

32.

Close approach of the Moon and Venus The Moon and Venus pass close to each other. Sat, 28 Dec 2019 at 20:56 EDT (1,692 days ago) in Capricornus

33.

Lunar occultation of Venus The Moon will pass in front of Venus, creating a lunar occultation visible from Antarctica. Sat, 28 Dec 2019 at 20:56 EDT (1,692 days ago) in Capricornus

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. Sun, 29 Dec 2019 (1,691 days ago) in Monoceros

35.

Mercury at aphelion Mercury passes the furthest point along its orbit from the Sun. Mon, 30 Dec 2019 at 00:25 EDT (1,690 days ago) in Sagittarius

36.

The Rosette Nebula is well placed The Rosette Nebula (C49; mag 9.0) in Monoceros culminates at around midnight local time. Mon, 30 Dec 2019 (1,690 days ago) in Monoceros

37.

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. Wed, 01 Jan 2020 at 20:30 EDT (1,688 days ago) in Pisces

38.

The cluster Messier 41 is well placed The open star cluster M41 (NGC 2287; mag 4.5) in Canis Major culminates at around midnight local time. Thu, 02 Jan 2020 (1,687 days ago) in Canis Major

39.

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. Thu, 02 Jan 2020 at 23:46 EDT (1,686 days ago) in Cetus

40.

Quadrantid meteor shower 2020 The Quadrantid meteor shower reaches its peak. Sat, 04 Jan 2020 (1,685 days ago) in Bootes