1.

Geminid meteor shower 2025 The Geminid meteor shower reaches its peak. Sat, 13 Dec 2025 (13 days ago) in Gemini

2.

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 (12 days ago) in Orion

3.

The Orion Nebula is well placed The Orion Nebula (M42; mag 4.0) culminates at around midnight local time. Mon, 15 Dec 2025 (12 days ago) in Orion

4.

Comae Berenicid meteor shower 2025 The Comae Berenicid meteor shower reaches its peak. Mon, 15 Dec 2025 (11 days ago) in Leo

5.

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. Tue, 16 Dec 2025 at 22:08 PST (11 days ago) in Libra

6.

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 04:14 PST (9 days ago) in Ophiuchus

7.

December Leonis Minorid meteor shower 2025 The December Leonis Minorid meteor shower reaches its peak. Fri, 19 Dec 2025 (7 days ago) in Leo Minor

8.

New Moon The Moon disappears into the Sun's glare for a few days. Fri, 19 Dec 2025 at 17:44 PST (8 days ago) in Sagittarius

9.

The Moon at perihelion The Moon passes its closest point to the Sun, a monthly occurrence around the time of new moon. Sat, 20 Dec 2025 at 07:58 PST (7 days ago) in Sagittarius

10.

December solstice 21 December will be the shortest day of 2025 in the northern hemisphere. Sun, 21 Dec 2025 at 07:04 PST (6 days ago) in Sagittarius

11.

Ursid meteor shower 2025 The Ursid meteor shower reaches its peak. Mon, 22 Dec 2025 (5 days ago) in Ursa Minor

12.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Fri, 26 Dec 2025 at 16:08 PST (23 hours ago) in Aquarius

13.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 4°01'. Fri, 26 Dec 2025 at 19:34 PST (20 hours ago) in Aquarius

14.

Moon at First Quarter The Moon reaches first quarter phase – appearing high in the sky at sunset and remaining visible until around midnight. Sat, 27 Dec 2025 at 11:10 PST (4 hours ago) in Pisces

15.

The cluster NGC 2232 is well placed The open star cluster NGC 2232 (mag 4.2) in Monoceros culminates at around midnight local time. Sun, 28 Dec 2025 (Tomorrow) in Monoceros

16.

The Rosette Nebula is well placed The Rosette Nebula (C49; mag 9.0) in Monoceros culminates at around midnight local time. Mon, 29 Dec 2025 (2 days away) in Monoceros

17.

Close approach of the Moon and M45 The Moon and M45 pass close to each other. Wed, 31 Dec 2025 at 05:45 PST (4 days away) in Taurus

18.

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, 01 Jan 2026 at 13:44 PST (5 days away) in Taurus

19.

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 Brazil, Peru, Colombia and Bolivia amongst others. Thu, 01 Jan 2026 at 17:51 PST (5 days away) in Taurus

20.

Asteroid 40 Harmonia at opposition Asteroid 40 Harmonia makes closest approach to the Earth. Fri, 02 Jan 2026 at 06:22 PST (6 days away) in Gemini