441.

December φ-Cassiopeid meteor shower 2025 The December φ-Cassiopeid meteor shower reaches its peak. Sat, 06 Dec 2025 (564 days away) in Andromeda

442.

Puppid-Velid meteor shower 2025 The Puppid-Velid meteor shower reaches its peak. Sun, 07 Dec 2025 (565 days away) in Vela

443.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 3°42'. Sun, 07 Dec 2025 at 10:47 EDT (565 days away) in Gemini

444.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Sun, 07 Dec 2025 at 12:10 EDT (565 days away) in Gemini

445.

Mercury at greatest elongation west Mercury is bright and well placed in the dawn sky. Sun, 07 Dec 2025 at 19:14 EDT (565 days away) in Libra

446.

Asteroid 16 Psyche at opposition Asteroid 16 Psyche makes closest approach to the Earth. Sun, 07 Dec 2025 at 21:22 EDT (565 days away) in Taurus

447.

Monocerotid meteor shower 2025 The Monocerotid meteor shower reaches its peak. Mon, 08 Dec 2025 (567 days away) in Monoceros

448.

Lunar occultation of Regulus The Moon will pass in front of Regulus (Alpha Leonis), creating a lunar occultation visible from countries and territories including Canada, Greenland, Svalbard and Iceland amongst others. Wed, 10 Dec 2025 at 02:47 EDT (568 days away) in Leo

449.

Neptune ends retrograde motion Neptune returns to its usual eastward motion after opposition. Wed, 10 Dec 2025 at 07:13 EDT (568 days away) in Pisces

450.

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. Thu, 11 Dec 2025 at 15:52 EDT (569 days away) in Leo

451.

σ-Hydrid meteor shower 2025 The σ-Hydrid meteor shower reaches its peak. Thu, 11 Dec 2025 (570 days away) in Hydra

452.

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. Fri, 12 Dec 2025 (570 days away) in Dorado

453.

Geminid meteor shower 2025 The Geminid meteor shower reaches its peak. Sun, 14 Dec 2025 (572 days away) in Gemini

454.

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. Mon, 15 Dec 2025 (573 days away) in Orion

455.

The Orion Nebula is well placed The Orion Nebula (M42; mag 4.0) culminates at around midnight local time. Mon, 15 Dec 2025 (573 days away) in Orion

456.

Comae Berenicid meteor shower 2025 The Comae Berenicid meteor shower reaches its peak. Mon, 15 Dec 2025 (574 days away) in Leo

457.

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. Wed, 17 Dec 2025 at 01:08 EDT (575 days away) in Libra

458.

Conjunction of the Moon and Mercury The Moon and Mercury share the same right ascension, at a separation of 6°09'. Thu, 18 Dec 2025 at 07:14 EDT (576 days away) in Ophiuchus

459.

Comet 240P/NEAT passes perihelion Comet 240P/NEAT makes its closest approach to the Sun. Fri, 19 Dec 2025 (577 days away) in Aries

460.

December Leonis Minorid meteor shower 2025 The December Leonis Minorid meteor shower reaches its peak. Fri, 19 Dec 2025 (578 days away) in Leo Minor