261.

The Moon at aphelion The Moon passes its furthest point from the Sun, a monthly occurrence around the time of full moon. Wed, 03 Dec 2025 at 15:54 EDT (100 days ago) in Aries

262.

Close approach of the Moon and M45 The Moon and M45 pass close to each other. Wed, 03 Dec 2025 at 22:19 EDT (100 days ago) in Taurus

263.

Mercury at dichotomy Mercury reaches half phase in the dawn sky. Thu, 04 Dec 2025 at 03:05 EDT (99 days ago) in Libra

264.

The Moon at perigee The Moon makes its monthly closest approach to the Earth, appearing larger than at other times of the month – though only very fractionally. Thu, 04 Dec 2025 at 06:07 EDT (99 days ago) in Taurus

265.

Full Moon The Moon reaches full phase and is visible for much of the night. Thu, 04 Dec 2025 at 18:13 EDT (99 days ago) in Taurus

266.

Lunar occultation of Beta Tauri The Moon will pass in front of Beta Tauri (Elnath), creating a lunar occultation visible from countries and territories including Australia, Indonesia, Papua New Guinea and Malaysia amongst others. Fri, 05 Dec 2025 at 09:42 EDT (98 days ago) in Taurus

267.

Mercury at highest altitude in morning sky Mercury is bright and well placed in the dawn sky. Fri, 05 Dec 2025 (97 days ago) in Libra

268.

December φ-Cassiopeid meteor shower 2025 The December φ-Cassiopeid meteor shower reaches its peak. Sat, 06 Dec 2025 (97 days ago) in Andromeda

269.

Puppid-Velid meteor shower 2025 The Puppid-Velid meteor shower reaches its peak. Sun, 07 Dec 2025 (96 days ago) in Vela

270.

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 (96 days ago) in Gemini

271.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Sun, 07 Dec 2025 at 12:10 EDT (96 days ago) in Gemini

272.

Mercury at greatest elongation west Mercury is bright and well placed in the dawn sky. Sun, 07 Dec 2025 at 19:14 EDT (96 days ago) in Libra

273.

Asteroid 16 Psyche at opposition Asteroid 16 Psyche makes closest approach to the Earth. Sun, 07 Dec 2025 at 21:22 EDT (96 days ago) in Taurus

274.

Monocerotid meteor shower 2025 The Monocerotid meteor shower reaches its peak. Mon, 08 Dec 2025 (94 days ago) in Monoceros

275.

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 (93 days ago) in Leo

276.

Neptune ends retrograde motion Neptune returns to its usual eastward motion after opposition. Wed, 10 Dec 2025 at 07:13 EDT (93 days ago) in Pisces

277.

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 (92 days ago) in Leo

278.

σ-Hydrid meteor shower 2025 The σ-Hydrid meteor shower reaches its peak. Thu, 11 Dec 2025 (91 days ago) in Hydra

279.

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 (91 days ago) in Dorado

280.

Geminid meteor shower 2025 The Geminid meteor shower reaches its peak. Sun, 14 Dec 2025 (89 days ago) in Gemini