1.

Close approach of the Moon and M45 The Moon and M45 pass close to each other. Sun, 19 Apr 2026 at 09:52 PDT (14 days ago) in Taurus

2.

Conjunction of Mercury and Mars Mercury and Mars share the same right ascension, at a separation of 1°48'. Sun, 19 Apr 2026 at 17:00 PDT (14 days ago) in Cetus

3.

Conjunction of Mercury and Saturn Mercury and Saturn share the same right ascension, at a separation of 30'. Mon, 20 Apr 2026 at 01:03 PDT (13 days ago) in Cetus

4.

Close approach of Mercury and Saturn Mercury and Saturn pass within 27' of each other. Mon, 20 Apr 2026 at 04:28 PDT (13 days ago) in Cetus

5.

Conjunction of Saturn and Mars Saturn and Mars share the same right ascension, at a separation of 1°18'. Mon, 20 Apr 2026 at 10:36 PDT (13 days ago) in Cetus

6.

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 Fiji, Samoa, Tonga and American Samoa amongst others. Mon, 20 Apr 2026 at 22:24 PDT (13 days ago) in Taurus

7.

Lyrid meteor shower 2026 The Lyrid meteor shower reaches its peak. Wed, 22 Apr 2026 (11 days ago) in Hercules

8.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 3°33'. Wed, 22 Apr 2026 at 15:04 PDT (11 days ago) in Gemini

9.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Wed, 22 Apr 2026 at 16:13 PDT (11 days ago) in Gemini

10.

136108 Haumea at opposition 136108 Haumea is optimally positioned for observation. Thu, 23 Apr 2026 at 01:47 PDT (10 days ago) in Bootes

11.

Comet 141P/Machholz passes perihelion Comet 141P/Machholz makes its closest approach to the Sun. Thu, 23 Apr 2026 (10 days ago) in Aries

12.

Messier 101 is well placed The Pinwheel Galaxy M101 (NGC 5457; mag 7.9) in Ursa Major culminates at around midnight local time. Thu, 23 Apr 2026 (10 days ago) in Ursa Major

13.

π-Puppid meteor shower 2026 The π-Puppid meteor shower reaches its peak. Thu, 23 Apr 2026 (9 days ago) in Puppis

14.

Moon at First Quarter The Moon reaches first quarter phase – appearing high in the sky at sunset and remaining visible until around midnight. Thu, 23 Apr 2026 at 19:32 PDT (10 days ago) in Cancer

15.

Conjunction of Venus and Uranus Venus and Uranus share the same right ascension, at a separation of 46'. Thu, 23 Apr 2026 at 22:24 PDT (10 days ago) in Taurus

16.

Close approach of the Moon and M44 The Moon and M44 pass close to each other. Fri, 24 Apr 2026 at 02:18 PDT (9 days ago) in Cancer

17.

Lunar occultation of Regulus The Moon will pass in front of Regulus (Alpha Leonis), creating a lunar occultation visible from countries and territories including Brazil, the Contiguous United States, Colombia and Venezuela amongst others. Sat, 25 Apr 2026 at 18:27 PDT (8 days ago) in Leo

18.

Comet C/2025 R3 (PANSTARRS) passes perigee Comet C/2025 R3 (PANSTARRS) makes its closest approach to the Earth. Sun, 26 Apr 2026 (7 days ago) in Cetus

19.

Full Moon The Moon reaches full phase and is visible for much of the night. Fri, 01 May 2026 at 10:23 PDT (2 days ago) in Libra

20.

Conjunction of Mercury and Eris Mercury and Eris share the same right ascension, at a separation of 9°14'. Sat, 02 May 2026 at 04:40 PDT (Yesterday) in Cetus