481.

Pheonicid meteor shower 2023 The Pheonicid meteor shower reaches its peak. Sat, 02 Dec 2023 (228 days ago) in Phoenix

482.

Mercury at greatest elongation east Mercury is bright and well placed in the evening sky. Mon, 04 Dec 2023 at 12:26 EDT (226 days ago) in Sagittarius

483.

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. Mon, 04 Dec 2023 at 13:42 EDT (226 days ago) in Leo

484.

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. Tue, 05 Dec 2023 at 00:49 EDT (225 days ago) in Leo

485.

Neptune ends retrograde motion Neptune returns to its usual eastward motion after opposition. Wed, 06 Dec 2023 at 07:38 EDT (224 days ago) in Aquarius

486.

December φ-Cassiopeid meteor shower 2023 The December φ-Cassiopeid meteor shower reaches its peak. Wed, 06 Dec 2023 (224 days ago) in Andromeda

487.

Puppid-Velid meteor shower 2023 The Puppid-Velid meteor shower reaches its peak. Thu, 07 Dec 2023 (223 days ago) in Vela

488.

Mercury at dichotomy Mercury reaches half phase in the evening sky. Fri, 08 Dec 2023 at 06:44 EDT (222 days ago) in Sagittarius

489.

Mercury at highest altitude in evening sky Mercury is bright and well placed in the evening sky. Fri, 08 Dec 2023 (222 days ago) in Sagittarius

490.

Close approach of the Moon and Venus The Moon and Venus pass close to each other. Sat, 09 Dec 2023 at 08:43 EDT (221 days ago) in Virgo

491.

Monocerotid meteor shower 2023 The Monocerotid meteor shower reaches its peak. Sat, 09 Dec 2023 (221 days ago) in Monoceros

492.

Conjunction of the Moon and Venus The Moon and Venus share the same right ascension, at a separation of 3°38'. Sat, 09 Dec 2023 at 11:54 EDT (221 days ago) in Virgo

493.

σ-Hydrid meteor shower 2023 The σ-Hydrid meteor shower reaches its peak. Tue, 12 Dec 2023 (218 days ago) in Hydra

494.

New Moon The Moon disappears into the Sun's glare for a few days. Tue, 12 Dec 2023 at 18:33 EDT (218 days ago) in Ophiuchus

495.

The Large Magellanic Cloud is well placed The Milky Way's dwarf companion, the Large Magellanic Cloud (LMC; mag 0.9), in Dorado culminates at around midnight local time. Tue, 12 Dec 2023 (218 days ago) in Dorado

496.

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. Wed, 13 Dec 2023 at 10:39 EDT (217 days ago) in Sagittarius

497.

Conjunction of the Moon and Mercury The Moon and Mercury share the same right ascension, at a separation of 4°21'. Thu, 14 Dec 2023 at 00:20 EDT (216 days ago) in Sagittarius

498.

Geminid meteor shower 2023 The Geminid meteor shower reaches its peak. Thu, 14 Dec 2023 (216 days ago) in Gemini

499.

The Orion Nebula is well placed The Orion Nebula (M42; mag 4.0) culminates at around midnight local time. Fri, 15 Dec 2023 (215 days ago) in Orion

500.

The Running Man cluster is well placed The Running Man cluster NGC 1977 (mag 4.2) in Orion's sword culminates at around midnight local time. Fri, 15 Dec 2023 (215 days ago) in Orion