1.

Neptune ends retrograde motion Neptune returns to its usual eastward motion after opposition. Wed, 01 Dec 2021 at 08:10 EST (48 days ago) in Aquarius

2.

Pheonicid meteor shower 2021 The Pheonicid meteor shower reaches its peak. Thu, 02 Dec 2021 (47 days ago) in Phoenix

3.

Mercury at aphelion Mercury reaches its furthest point from the Sun. Thu, 02 Dec 2021 at 18:31 EST (47 days ago) in Ophiuchus

4.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 0°41'. Thu, 02 Dec 2021 at 19:27 EST (47 days ago) in Libra

5.

Total solar eclipse There will be an eclipse of the Sun, visible from Australia and New Zealand, Sub-Saharan Africa, South America and Antarctica. Sat, 04 Dec 2021 at 02:33 EST (45 days ago) in Ophiuchus

6.

New Moon The Moon disappears into the Sun's glare. Sat, 04 Dec 2021 at 02:44 EST (45 days ago) in Ophiuchus

7.

The Moon at perigee The Moon appears large as it makes its closest approach to the Earth. Sat, 04 Dec 2021 at 05:04 EST (45 days ago) in Ophiuchus

8.

The Moon at perihelion The Moon reaches its closest point to the Sun. Sun, 05 Dec 2021 at 04:23 EST (44 days ago) in Sagittarius

9.

Venus at highest altitude in evening sky Venus is bright and well placed in the evening sky. Sun, 05 Dec 2021 (44 days ago) in Ophiuchus

10.

December φ-Cassiopeid meteor shower 2021 The December φ-Cassiopeid meteor shower reaches its peak. Mon, 06 Dec 2021 (43 days ago) in Andromeda

11.

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 19:49 EST (43 days ago) in Sagittarius

12.

Puppid-Velid meteor shower 2021 The Puppid-Velid meteor shower reaches its peak. Tue, 07 Dec 2021 (42 days ago) in Vela

13.

Venus at greatest brightness Venus reaches its greatest brightness in the evening sky. Tue, 07 Dec 2021 at 11:09 EST (42 days ago) in Sagittarius

14.

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 20:49 EST (42 days ago) in Capricornus

15.

Monocerotid meteor shower 2021 The Monocerotid meteor shower reaches its peak. Wed, 08 Dec 2021 (40 days ago) in Monoceros

16.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 4°28'. Thu, 09 Dec 2021 at 01:10 EST (40 days ago) in Capricornus

17.

Asteroid 44 Nysa at opposition Asteroid 44 Nysa makes closest approach to the Earth. Fri, 10 Dec 2021 at 14:10 EST (39 days ago) in Taurus

18.

Moon at First Quarter The Moon appears high in the sky at sunset and sets in the west at around midnight. Fri, 10 Dec 2021 at 20:36 EST (39 days ago) in Aquarius

19.

σ-Hydrid meteor shower 2021 The σ-Hydrid meteor shower reaches its peak. Sat, 11 Dec 2021 (37 days ago) in Hydra

20.

C/2021 A1 (Leonard) at perigee C/2021 A1 (Leonard) makes its closest approach to the Earth. Sun, 12 Dec 2021 (37 days ago) in Ophiuchus