1.

Mercury at perihelion Mercury passes its closest point to the Sun. Mon, 18 May 2026 at 03:27 PDT (13 days ago) in Taurus

2.

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 Mozambique, Malawi, Tanzania and Zimbabwe amongst others. Mon, 18 May 2026 at 07:31 PDT (13 days ago) in Taurus

3.

Conjunction of the Moon and Venus The Moon and Venus share the same right ascension, at a separation of 2°56'. Mon, 18 May 2026 at 18:50 PDT (13 days ago) in Taurus

4.

Close approach of the Moon and Venus The Moon and Venus pass close to each other. Mon, 18 May 2026 at 19:03 PDT (13 days ago) in Taurus

5.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 3°05'. Wed, 20 May 2026 at 05:37 PDT (11 days ago) in Gemini

6.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Wed, 20 May 2026 at 06:46 PDT (11 days ago) in Gemini

7.

Close approach of the Moon and M44 The Moon and M44 pass close to each other. Thu, 21 May 2026 at 09:00 PDT (10 days ago) in Cancer

8.

Uranus at solar conjunction Uranus is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Fri, 22 May 2026 at 07:17 PDT (9 days ago) in Taurus

9.

Lunar occultation of Regulus The Moon will pass in front of Regulus (Alpha Leonis), creating a lunar occultation visible from parts of Oceania, Baker Island, Howland Island and Tokelau. Sat, 23 May 2026 at 00:17 PDT (8 days ago) in Leo

10.

Moon at First Quarter The Moon reaches first quarter phase – appearing high in the sky at sunset and remaining visible until around midnight. Sat, 23 May 2026 at 04:11 PDT (8 days ago) in Leo

11.

Messier 4 is well placed The globular cluster M4 (NGC 6121; mag 5.4) in Scorpius culminates at around midnight local time. Thu, 28 May 2026 (3 days ago) in Scorpius

12.

Asteroid 29 Amphitrite at opposition Asteroid 29 Amphitrite makes closest approach to the Earth. Thu, 28 May 2026 at 16:58 PDT (3 days ago) in Scorpius

13.

Blue Moon The Moon reaches full phase and is visible for much of the night. Sun, 31 May 2026 at 01:45 PDT (9 hours ago) in Scorpius

14.

Lunar occultation of Antares The Moon will pass in front of Antares (Alpha Scorpii), creating a lunar occultation visible from countries and territories including Argentina, Australia, Chile and New Zealand amongst others. Sun, 31 May 2026 at 02:09 PDT (8 hours ago) in Scorpius

15.

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. Sun, 31 May 2026 at 21:32 PDT (10 hours away) in Ophiuchus

16.

The Moon at aphelion The Moon passes its furthest point from the Sun, a monthly occurrence around the time of full moon. Mon, 01 Jun 2026 at 15:26 PDT (Tomorrow) in Sagittarius

17.

The Great Globular Cluster in Hercules is well placed The Great Globular Cluster in Hercules (M13, NGC 6205; mag 5.8) culminates at around midnight local time. Tue, 02 Jun 2026 (2 days away) in Hercules

18.

Lunar occultation of Sigma Sagittarii The Moon will pass in front of Sigma Sagittarii (Nunki), creating a lunar occultation visible from countries and territories including Argentina, Antarctica, South Africa and Chile amongst others. Tue, 02 Jun 2026 at 20:08 PDT (2 days away) in Sagittarius

19.

Messier 12 is well placed The globular cluster M12 (NGC 6218; mag 6.1) in Ophiuchus culminates at around midnight local time. Wed, 03 Jun 2026 (3 days away) in Ophiuchus

20.

Messier 10 is well placed The globular cluster M10 (NGC 6254; mag 6.6) in Ophiuchus culminates at around midnight local time. Sat, 06 Jun 2026 (6 days away) in Ophiuchus