1.

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 23:08 EDT (4 days ago) in Sagittarius

2.

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 (4 days ago) in Hercules

3.

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 18:26 EDT (5 days ago) in Sagittarius

4.

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. Mon, 01 Jun 2026 at 00:32 EDT (5 days ago) in Ophiuchus

5.

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 05:09 EDT (6 days ago) in Scorpius

6.

Blue Moon The Moon reaches full phase and is visible for much of the night. Sun, 31 May 2026 at 04:45 EDT (6 days ago) in Scorpius

7.

Asteroid 29 Amphitrite at opposition Asteroid 29 Amphitrite makes closest approach to the Earth. Thu, 28 May 2026 at 19:58 EDT (9 days ago) in Scorpius

8.

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 (9 days ago) in Scorpius

9.

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 07:11 EDT (14 days ago) in Leo

10.

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 03:17 EDT (14 days ago) in Leo

11.

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 10:17 EDT (15 days ago) in Taurus

12.

Close approach of the Moon and M44 The Moon and M44 pass close to each other. Thu, 21 May 2026 at 12:00 EDT (16 days ago) in Cancer

13.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Wed, 20 May 2026 at 09:46 EDT (17 days ago) in Gemini

14.

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 08:37 EDT (17 days ago) in Gemini

15.

Close approach of the Moon and Venus The Moon and Venus pass close to each other. Mon, 18 May 2026 at 22:03 EDT (19 days ago) in Taurus

16.

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 21:50 EDT (19 days ago) in Taurus

17.

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 10:31 EDT (19 days ago) in Taurus

18.

Mercury at perihelion Mercury passes its closest point to the Sun. Mon, 18 May 2026 at 06:27 EDT (19 days ago) in Taurus

19.

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. Sun, 17 May 2026 at 09:43 EDT (20 days ago) in Taurus

20.

New Moon The Moon disappears into the Sun's glare for a few days. Sat, 16 May 2026 at 16:02 EDT (21 days ago) in Aries