1.

Neptune ends retrograde motion Neptune returns to its usual eastward motion after opposition. Wed, 01 Dec 2021 at 05:10 PDT (1,307 days ago) in Aquarius

2.

Pheonicid meteor shower 2021 The Pheonicid meteor shower reaches its peak. Wed, 01 Dec 2021 (1,306 days ago) in Phoenix

3.

Mercury at aphelion Mercury passes the furthest point along its orbit from the Sun. Thu, 02 Dec 2021 at 15:31 PDT (1,306 days ago) in Ophiuchus

4.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 41'. Thu, 02 Dec 2021 at 16:27 PDT (1,306 days ago) in Libra

5.

Venus at highest altitude in evening sky Venus is bright and well placed in the evening sky. Fri, 03 Dec 2021 (1,305 days ago) in Ophiuchus

6.

Total solar eclipse There will be an eclipse of the Sun, visible from Antarctica. Fri, 03 Dec 2021 at 23:33 PDT (1,304 days ago) in Ophiuchus

7.

New Moon The Moon disappears into the Sun's glare for a few days. Fri, 03 Dec 2021 at 23:44 PDT (1,304 days ago) in Ophiuchus

8.

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. Sat, 04 Dec 2021 at 02:04 PDT (1,304 days ago) in Ophiuchus

9.

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. Sun, 05 Dec 2021 at 01:23 PDT (1,303 days ago) in Sagittarius

10.

December φ-Cassiopeid meteor shower 2021 The December φ-Cassiopeid meteor shower reaches its peak. Sun, 05 Dec 2021 (1,302 days ago) in Andromeda

11.

Lunar occultation of Sigma Sagittarii The Moon will pass in front of Sigma Sagittarii (Nunki), creating a lunar occultation visible from Papua New Guinea, Indonesia, Australia and Solomon Islands. Sun, 05 Dec 2021 at 23:42 PDT (1,302 days ago) in Sagittarius

12.

Conjunction of the Moon and Venus The Moon and Venus share the same right ascension, at a separation of 1°52'. Mon, 06 Dec 2021 at 16:49 PDT (1,302 days ago) in Sagittarius

13.

Close approach of the Moon and Venus The Moon and Venus pass close to each other. Mon, 06 Dec 2021 at 17:08 PDT (1,302 days ago) in Sagittarius

14.

Puppid-Velid meteor shower 2021 The Puppid-Velid meteor shower reaches its peak. Mon, 06 Dec 2021 (1,301 days ago) in Vela

15.

Venus at greatest brightness Venus reaches its greatest brightness in the evening sky. Tue, 07 Dec 2021 at 08:09 PDT (1,301 days ago) in Sagittarius

16.

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 17:49 PDT (1,301 days ago) in Capricornus

17.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Tue, 07 Dec 2021 at 19:28 PDT (1,301 days ago) in Capricornus

18.

Monocerotid meteor shower 2021 The Monocerotid meteor shower reaches its peak. Wed, 08 Dec 2021 (1,299 days ago) in Monoceros

19.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 4°28'. Wed, 08 Dec 2021 at 22:10 PDT (1,300 days ago) in Capricornus

20.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Thu, 09 Dec 2021 at 00:49 PDT (1,299 days ago) in Capricornus