1.

The Moon at perihelion The Moon reaches its closest point to the Sun. Tue, 08 Jun 2021 at 23:43 EDT (14 days ago) in Taurus

2.

Mercury at aphelion Mercury reaches its furthest point from the Sun. Wed, 09 Jun 2021 at 21:21 EDT (13 days ago) in Taurus

3.

Annular solar eclipse There will be an eclipse of the Sun, visible from Northern America. Thu, 10 Jun 2021 at 06:42 EDT (12 days ago) in Taurus

4.

New Moon The Moon disappears into the Sun's glare. Thu, 10 Jun 2021 at 06:54 EDT (12 days ago) in Taurus

5.

Daytime Arietid meteor shower 2021 The Daytime Arietid meteor shower reaches its peak. Thu, 10 Jun 2021 (12 days ago) in Aries

6.

Mercury at inferior solar conjunction Mercury passes around the near side of the Sun. Thu, 10 Jun 2021 at 21:07 EDT (12 days ago) in Taurus

7.

M92 is well placed The globular cluster M92 (NGC 6341; mag 6.4) in Hercules is well placed in the sky. Fri, 11 Jun 2021 (11 days ago) in Hercules

8.

Conjunction of the Moon and Venus The Moon and Venus share the same right ascension, at a separation of 1°28'. Sat, 12 Jun 2021 at 02:42 EDT (10 days ago) in Gemini

9.

Venus at perihelion Venus reaches its closest point to the Sun. Sat, 12 Jun 2021 at 17:18 EDT (10 days ago) in Gemini

10.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 2°48'. Sun, 13 Jun 2021 at 15:52 EDT (9 days ago) in Cancer

11.

Close approach of the Moon and Mars The Moon and Mars pass within 2°46' of each other. Sun, 13 Jun 2021 at 16:47 EDT (9 days ago) in Cancer

12.

NGC 6388 is well placed The globular cluster NGC 6388 (mag 6.7) in Scorpius is well placed in the sky. Tue, 15 Jun 2021 (7 days ago) in Scorpius

13.

M6 is well placed The butterfly open star cluster (M6, NGC 6405; mag 4.2) in Scorpius is well placed in the sky. Wed, 16 Jun 2021 (6 days ago) in Scorpius

14.

NGC 6397 is well placed The globular cluster NGC 6397 (mag 5.7) in Ara is well placed in the sky. Thu, 17 Jun 2021 (5 days ago) in Ara

15.

Moon at First Quarter The Moon appears high in the sky at sunset and sets in the west at around midnight. Thu, 17 Jun 2021 at 23:54 EDT (5 days ago) in Virgo

16.

15P/Finlay at perigee 15P/Finlay makes its closest approach to the Earth. Fri, 18 Jun 2021 (4 days ago) in Pisces

17.

IC4665 is well placed The open star cluster IC 4665 (mag 4.2) in Ophiuchus is well placed in the sky. Fri, 18 Jun 2021 (4 days ago) in Ophiuchus

18.

Jupiter enters retrograde motion Jupiter reverses its direction of motion across the sky. Sun, 20 Jun 2021 at 11:07 EDT (2 days ago) in Aquarius

19.

M7 is well placed The Ptolemy cluster (M7, NGC 6475; mag 4.1) in Scorpius is well placed in the sky. Sun, 20 Jun 2021 (2 days ago) in Scorpius

20.

June solstice 21 June will be the longest day of 2021 in the northern hemisphere. Sun, 20 Jun 2021 at 23:25 EDT (2 days ago) in Taurus