21.

The Moon at perigee The Moon makes its monthly closest approach to the Earth, making it appear fractionally larger than at other times of the month. Sun, 05 May 2024 at 18:04 EDT (14 days ago) in Pisces

22.

Conjunction of the Moon and Mercury The Moon and Mercury share the same right ascension, at a separation of 3°49'. Mon, 06 May 2024 at 04:25 EDT (13 days ago) in Pisces

23.

The Moon at perihelion The Moon passes its orbit's closest point to the Sun, which happens each month around the time of new moon. Mon, 06 May 2024 at 04:34 EDT (13 days ago) in Pisces

24.

New Moon The Moon disappears into the Sun's glare for a few days. Tue, 07 May 2024 at 23:23 EDT (12 days ago) in Aries

25.

η-Lyrid meteor shower 2024 The η-Lyrid meteor shower reaches its peak. Wed, 08 May 2024 (11 days ago) in Lyra

26.

Mars at perihelion Mars passes its orbit's closest point to the Sun. Wed, 08 May 2024 at 07:08 EDT (11 days ago) in Pisces

27.

Mercury at greatest elongation west Mercury is bright and well placed in the dawn sky. Thu, 09 May 2024 at 15:43 EDT (10 days ago) in Pisces

28.

Lunar occultation of Beta Tauri The Moon will pass in front of Beta Tauri (Elnath), creating a lunar occultation visible from Sub-Saharan Africa. Fri, 10 May 2024 at 10:43 EDT (9 days ago) in Taurus

29.

Messier 5 is well placed The globular cluster M5 (NGC 5904; mag 5.7) in Serpens culminates at around midnight local time. Sat, 11 May 2024 (8 days ago) in Serpens Caput

30.

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. Mon, 13 May 2024 at 05:04 EDT (6 days ago) in Aries

31.

Conjunction of Mercury and Eris Mercury and Eris share the same right ascension, at a separation of 8°07'. Tue, 14 May 2024 at 05:08 EDT (5 days ago) in Cetus

32.

Mercury at highest altitude in morning sky Mercury is bright and well placed in the dawn sky. Tue, 14 May 2024 (5 days ago) in Pisces

33.

Mercury at dichotomy Mercury reaches half phase in the dawn sky. Tue, 14 May 2024 at 19:04 EDT (5 days ago) in Pisces

34.

Moon at First Quarter The Moon reaches first quarter phase – appearing high in the sky at sunset and setting in the west at around midnight. Wed, 15 May 2024 at 07:48 EDT (4 days ago) in Leo

35.

Asteroid 2 Pallas at opposition Asteroid 2 Pallas makes closest approach to the Earth. Fri, 17 May 2024 at 03:10 EDT (2 days ago) in Hercules

36.

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. Fri, 17 May 2024 at 14:58 EDT (2 days ago) in Leo

37.

Jupiter at solar conjunction Jupiter is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Sat, 18 May 2024 at 14:34 EDT (15 hours ago) in Taurus

38.

Comet 46P/Wirtanen passes perihelion Comet 46P/Wirtanen makes its closest approach to the Sun. Sun, 19 May 2024 (Today) in Taurus

39.

Jupiter at apogee Jupiter reaches its furthest point from the Earth, as it passes around the far side of the Sun. Mon, 20 May 2024 at 21:40 EDT (Tomorrow) in Taurus

40.

Full Moon The Moon reaches full phase and is visible for much of the night. Thu, 23 May 2024 at 09:53 EDT (4 days away) in Scorpius