1.

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. Thu, 17 Jun 2021 at 23:54 EDT (1,042 days ago) in Virgo

2.

NGC 6397 is well placed The globular cluster NGC 6397 (mag 5.6) in Ara culminates at around midnight local time. Thu, 17 Jun 2021 (1,042 days ago) in Ara

3.

Comet 15P/Finlay passes perigee Comet 15P/Finlay makes its closest approach to the Earth. Thu, 17 Jun 2021 (1,042 days ago) in Pisces

4.

The Butterfly cluster is well placed The Butterfly open star cluster (M6, NGC 6405; mag 4.2) in Scorpius culminates at around midnight local time. Wed, 16 Jun 2021 (1,043 days ago) in Scorpius

5.

NGC 6388 is well placed The globular cluster NGC 6388 (mag 6.8) in Scorpius culminates at around midnight local time. Tue, 15 Jun 2021 (1,044 days ago) in Scorpius

6.

Close approach of the Moon and Mars The Moon and Mars pass close to each other. Sun, 13 Jun 2021 at 16:47 EDT (1,046 days ago) in Cancer

7.

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 (1,046 days ago) in Cancer

8.

Venus at perihelion Venus passes its orbit's closest point to the Sun. Sat, 12 Jun 2021 at 17:18 EDT (1,047 days ago) in Gemini

9.

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 (1,047 days ago) in Gemini

10.

Messier 92 is well placed The globular cluster M92 (NGC 6341; mag 6.5) in Hercules culminates at around midnight local time. Fri, 11 Jun 2021 (1,048 days ago) in Hercules

11.

Mercury at inferior solar conjunction Mercury passes around the near side of the Sun. Thu, 10 Jun 2021 at 21:07 EDT (1,049 days ago) in Taurus

12.

Daytime Arietid meteor shower 2021 The Daytime Arietid meteor shower reaches its peak. Thu, 10 Jun 2021 (1,049 days ago) in Aries

13.

New Moon The Moon disappears into the Sun's glare for a few days. Thu, 10 Jun 2021 at 06:54 EDT (1,049 days ago) in Taurus

14.

Annular solar eclipse There will be an eclipse of the Sun, visible from eastern Canada, western Greenland and eastern Russia. Thu, 10 Jun 2021 at 06:42 EDT (1,049 days ago) in Taurus

15.

Mercury at aphelion Mercury passes the furthest point along its orbit from the Sun. Wed, 09 Jun 2021 at 21:21 EDT (1,050 days ago) in Taurus

16.

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. Tue, 08 Jun 2021 at 23:43 EDT (1,051 days ago) in Taurus

17.

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, 07 Jun 2021 at 22:27 EDT (1,052 days ago) in Aries

18.

Messier 62 is well placed The globular cluster M62 (NGC 6266; mag 6.4) in Ophiuchus culminates at around midnight local time. Sun, 06 Jun 2021 (1,053 days ago) in Ophiuchus

19.

Messier 10 is well placed The globular cluster M10 (NGC 6254; mag 6.6) in Ophiuchus culminates at around midnight local time. Sat, 05 Jun 2021 (1,054 days ago) in Ophiuchus

20.

Conjunction of Uranus and Ceres Uranus and Ceres share the same right ascension, at a separation of 6°25'. Fri, 04 Jun 2021 at 16:52 EDT (1,055 days ago) in Cetus