21.

The Rosette Nebula is well placed The Rosette Nebula (C49; mag 9.0) in Monoceros culminates at around midnight local time. Fri, 29 Dec 2017 (2,311 days ago) in Monoceros

22.

Close approach of the Moon and Collinder 50 The Moon and Collinder 50 pass close to each other. Sat, 30 Dec 2017 at 16:03 EDT (2,310 days ago) in Taurus

23.

Lunar occultation of Aldebaran The Moon will pass in front of Aldebaran (Alpha Tauri), creating a lunar occultation visible from countries and territories including Canada, Greenland, the Contiguous United States and Russia amongst others. Sat, 30 Dec 2017 at 19:35 EDT (2,310 days ago) in Taurus

24.

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, 01 Jan 2018 at 16:48 EDT (2,308 days ago) in Gemini

25.

Mercury at greatest elongation west Mercury is bright and well placed in the dawn sky. Mon, 01 Jan 2018 at 19:51 EDT (2,308 days ago) in Ophiuchus

26.

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. Mon, 01 Jan 2018 at 20:55 EDT (2,308 days ago) in Gemini

27.

Full Moon The Moon reaches full phase and is visible for much of the night. Mon, 01 Jan 2018 at 21:24 EDT (2,308 days ago) in Gemini

28.

Asteroid 8 Flora at opposition Asteroid 8 Flora makes closest approach to the Earth. Tue, 02 Jan 2018 at 09:22 EDT (2,307 days ago) in Gemini

29.

Uranus ends retrograde motion Uranus returns to its usual eastward motion after opposition. Tue, 02 Jan 2018 at 10:24 EDT (2,307 days ago) in Pisces

30.

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. Tue, 02 Jan 2018 (2,307 days ago) in Canis Major

31.

The Earth at perihelion The Earth reaches its closest point to the Sun. Wed, 03 Jan 2018 at 00:34 EDT (2,306 days ago) in Pisces

32.

Quadrantid meteor shower 2018 The Quadrantid meteor shower reaches its peak. Wed, 03 Jan 2018 (2,306 days ago) in Bootes

33.

Lunar occultation of Regulus The Moon will pass in front of Regulus (Alpha Leonis), creating a lunar occultation visible from countries and territories including Canada, Greenland, Alaska and Svalbard amongst others. Fri, 05 Jan 2018 at 03:11 EDT (2,304 days ago) in Leo

34.

Close approach of Jupiter and Mars Jupiter and Mars pass within 12' of each other. Sat, 06 Jan 2018 at 19:27 EDT (2,303 days ago) in Libra

35.

Conjunction of Jupiter and Mars Jupiter and Mars share the same right ascension, at a separation of 12'. Sat, 06 Jan 2018 at 22:40 EDT (2,303 days ago) in Libra

36.

Moon at Last Quarter The Moon reaches last quarter phase – rising in the east at around midnight and appearing high in the sky by sunrise. Mon, 08 Jan 2018 at 17:25 EDT (2,301 days ago) in Virgo

37.

Venus at superior solar conjunction Venus passes around the far side of the Sun. Tue, 09 Jan 2018 at 02:36 EDT (2,300 days ago) in Sagittarius

38.

134340 Pluto at solar conjunction 134340 Pluto is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Tue, 09 Jan 2018 at 10:53 EDT (2,300 days ago) in Sagittarius

39.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 4°20'. Thu, 11 Jan 2018 at 00:57 EDT (2,298 days ago) in Libra

40.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Thu, 11 Jan 2018 at 03:24 EDT (2,298 days ago) in Libra