1.

Conjunction of the Moon and Mercury The Moon and Mercury share the same right ascension, at a separation of 2°19'. Thu, 14 Jan 2021 at 00:14 PDT (1,640 days ago) in Capricornus

2.

Uranus ends retrograde motion Uranus returns to its usual eastward motion after opposition. Thu, 14 Jan 2021 at 01:12 PDT (1,640 days ago) in Aries

3.

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. Thu, 14 Jan 2021 at 06:36 PDT (1,640 days ago) in Sagittarius

4.

The cluster Messier 47 is well placed The open star cluster M47 (NGC 2422; mag 4.4) in Puppis culminates at around midnight local time. Thu, 14 Jan 2021 (1,640 days ago) in Puppis

5.

NGC 2403 is well placed NGC 2403 (mag 8.9), a spiral galaxy in Camelopardalis culminates at around midnight local time. Thu, 14 Jan 2021 (1,640 days ago) in Camelopardalis

6.

The cluster NGC 2451 is well placed The open star cluster NGC 2451 (mag 2.8) in Puppis culminates at around midnight local time. Sat, 16 Jan 2021 (1,638 days ago) in Puppis

7.

γ-Ursae Minorid meteor shower 2021 The γ-Ursae Minorid meteor shower reaches its peak. Mon, 18 Jan 2021 (1,635 days ago) in Ursa Minor

8.

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. Wed, 20 Jan 2021 at 13:02 PDT (1,634 days ago) in Pisces

9.

The cluster NGC 2516 is well placed The open star cluster NGC 2516 (mag 3.8) in Volans culminates at around midnight local time. Wed, 20 Jan 2021 (1,634 days ago) in Carina

10.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 5°03'. Wed, 20 Jan 2021 at 21:35 PDT (1,634 days ago) in Aries

11.

Close approach of the Moon, Mars and Uranus The Moon, Mars and Uranus pass close to one another. Thu, 21 Jan 2021 at 01:49 PDT (1,633 days ago) in Aries

12.

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. Thu, 21 Jan 2021 at 05:10 PDT (1,633 days ago) in Aries

13.

Asteroid 15 Eunomia at opposition Asteroid 15 Eunomia makes closest approach to the Earth. Thu, 21 Jan 2021 at 13:34 PDT (1,633 days ago) in Cancer

14.

Conjunction of Mars and Uranus Mars and Uranus share the same right ascension, at a separation of 1°43'. Thu, 21 Jan 2021 at 15:41 PDT (1,633 days ago) in Aries

15.

Comet C/2021 A2 (NEOWISE) passes perihelion Comet C/2021 A2 (NEOWISE) makes its closest approach to the Sun. Fri, 22 Jan 2021 (1,632 days ago) in Vela

16.

The cluster NGC 2547 is well placed The open star cluster NGC 2547 (mag 4.7) in Vela culminates at around midnight local time. Sat, 23 Jan 2021 (1,631 days ago) in Vela

17.

Mercury at greatest elongation east Mercury is bright and well placed in the evening sky. Sat, 23 Jan 2021 at 18:10 PDT (1,631 days ago) in Capricornus

18.

Saturn at solar conjunction Saturn is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Sat, 23 Jan 2021 at 18:51 PDT (1,631 days ago) in Capricornus

19.

Asteroid 14 Irene at opposition Asteroid 14 Irene makes closest approach to the Earth. Sun, 24 Jan 2021 at 13:34 PDT (1,630 days ago) in Cancer

20.

Mercury at highest altitude in evening sky Mercury is bright and well placed in the evening sky. Sun, 24 Jan 2021 (1,629 days ago) in Capricornus