1.

Conjunction of Ceres and Eris Ceres and Eris share the same right ascension, at a separation of 4°54'. Wed, 28 Apr 2021 at 16:08 EDT (13 days ago) in Cetus

2.

The Moon at aphelion The Moon reaches its furthest point from the Sun. Wed, 28 Apr 2021 at 23:32 EDT (13 days ago) in Scorpius

3.

Uranus at solar conjunction Uranus is unobservable as it passes around the far side of the Sun. Fri, 30 Apr 2021 at 15:44 EDT (11 days ago) in Aries

4.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 4°09'. Mon, 03 May 2021 at 12:58 EDT (8 days ago) in Capricornus

5.

Close approach of the Moon and Saturn The Moon and Saturn pass within 4°02' of each other. Mon, 03 May 2021 at 14:49 EDT (8 days ago) in Capricornus

6.

Moon at Last Quarter The Moon rises in the east at around midnight and appears high in the sky at sunrise. Mon, 03 May 2021 at 15:50 EDT (8 days ago) in Capricornus

7.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 4°36'. Tue, 04 May 2021 at 17:02 EDT (7 days ago) in Aquarius

8.

Close approach of the Moon and Jupiter The Moon and Jupiter pass within 4°21' of each other. Tue, 04 May 2021 at 19:55 EDT (7 days ago) in Aquarius

9.

η-Aquariid meteor shower 2021 The η-Aquariid meteor shower reaches its peak. Wed, 05 May 2021 (5 days ago) in Aquarius

10.

η-Lyrid meteor shower 2021 The η-Lyrid meteor shower reaches its peak. Sat, 08 May 2021 (3 days ago) in Lyra

11.

The Moon at perihelion The Moon reaches its closest point to the Sun. Sun, 09 May 2021 at 06:26 EDT (2 days ago) in Pisces

12.

New Moon The Moon disappears into the Sun's glare. Tue, 11 May 2021 at 15:01 EDT (5 hours ago) in Aries

13.

The Moon at apogee The Moon appears small as it recedes to its furthest point from the Earth. Tue, 11 May 2021 at 17:53 EDT (3 hours ago) in Aries

14.

M5 is well placed The globular cluster M5 (NGC 5904; mag 5.7) in Serpens is well placed in the sky. Tue, 11 May 2021 (Today) in Serpens Caput

15.

Mercury at dichotomy Mercury reaches half phase in the evening sky. Wed, 12 May 2021 at 01:20 EDT (4 hours away) in Taurus

16.

Conjunction of the Moon and Venus The Moon and Venus share the same right ascension, at a separation of 0°42'. Wed, 12 May 2021 at 18:03 EDT (21 hours away) in Taurus

17.

Conjunction of the Moon and Mercury The Moon and Mercury share the same right ascension, at a separation of 2°08'. Thu, 13 May 2021 at 13:58 EDT (2 days away) in Taurus

18.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 1°28'. Sun, 16 May 2021 at 00:47 EDT (5 days away) in Gemini

19.

Close approach of the Moon and Mars The Moon and Mars pass within 1°28' of each other. Sun, 16 May 2021 at 00:51 EDT (5 days away) in Gemini

20.

Mercury at highest altitude in evening sky Mercury is bright and well placed in the evening sky. Mon, 17 May 2021 (6 days away) in Taurus