621.

Neptune ends retrograde motion Neptune returns to its usual eastward motion after opposition. Wed, 01 Dec 2021 at 08:10 EDT (942 days ago) in Aquarius

622.

Pheonicid meteor shower 2021 The Pheonicid meteor shower reaches its peak. Thu, 02 Dec 2021 (941 days ago) in Phoenix

623.

Mercury at aphelion Mercury passes the furthest point along its orbit from the Sun. Thu, 02 Dec 2021 at 18:31 EDT (941 days ago) in Ophiuchus

624.

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 19:27 EDT (941 days ago) in Libra

625.

Total solar eclipse There will be an eclipse of the Sun, visible from Antarctica. Sat, 04 Dec 2021 at 02:33 EDT (939 days ago) in Ophiuchus

626.

New Moon The Moon disappears into the Sun's glare for a few days. Sat, 04 Dec 2021 at 02:44 EDT (939 days ago) in Ophiuchus

627.

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 05:04 EDT (939 days ago) in Ophiuchus

628.

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 04:23 EDT (938 days ago) in Sagittarius

629.

December φ-Cassiopeid meteor shower 2021 The December φ-Cassiopeid meteor shower reaches its peak. Mon, 06 Dec 2021 (937 days ago) in Andromeda

630.

Lunar occultation of Sigma Sagittarii The Moon will pass in front of Sigma Sagittarii (Nunki), creating a lunar occultation visible from countries and territories including Papua New Guinea, Indonesia, Australia and Solomon Islands amongst others. Mon, 06 Dec 2021 at 02:42 EDT (937 days ago) in Sagittarius

631.

Venus at highest altitude in evening sky Venus is bright and well placed in the evening sky. Mon, 06 Dec 2021 (937 days ago) in Ophiuchus

632.

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 EDT (937 days ago) in Sagittarius

633.

Close approach of the Moon and Venus The Moon and Venus pass close to each other. Mon, 06 Dec 2021 at 20:08 EDT (937 days ago) in Sagittarius

634.

Puppid-Velid meteor shower 2021 The Puppid-Velid meteor shower reaches its peak. Tue, 07 Dec 2021 (936 days ago) in Vela

635.

Venus at greatest brightness Venus reaches its greatest brightness in the evening sky. Tue, 07 Dec 2021 at 11:09 EDT (936 days ago) in Sagittarius

636.

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 EDT (936 days ago) in Capricornus

637.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Tue, 07 Dec 2021 at 22:28 EDT (936 days ago) in Capricornus

638.

Monocerotid meteor shower 2021 The Monocerotid meteor shower reaches its peak. Wed, 08 Dec 2021 (934 days ago) in Monoceros

639.

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 EDT (934 days ago) in Capricornus

640.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Thu, 09 Dec 2021 at 03:49 EDT (934 days ago) in Capricornus