21.

Comet C/2019 U6 (Lemmon) passes perihelion Comet C/2019 U6 (Lemmon) makes its closest approach to the Sun. Thu, 18 Jun 2020 (1,459 days ago) in Hydra

22.

The cluster IC 4665 is well placed The open star cluster IC 4665 (mag 4.2) in Ophiuchus culminates at around midnight local time. Thu, 18 Jun 2020 (1,459 days ago) in Ophiuchus

23.

Close approach of the Moon and Venus The Moon and Venus pass close to each other. Fri, 19 Jun 2020 at 04:32 EDT (1,458 days ago) in Taurus

24.

Lunar occultation of Venus The Moon will pass in front of Venus, creating a lunar occultation visible from countries and territories including Russia, Greenland, Canada and Sweden amongst others. Fri, 19 Jun 2020 at 04:32 EDT (1,458 days ago) in Taurus

25.

Conjunction of the Moon and Venus The Moon and Venus share the same right ascension, at a separation of 44'. Fri, 19 Jun 2020 at 04:54 EDT (1,458 days ago) in Taurus

26.

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. Sat, 20 Jun 2020 at 06:31 EDT (1,457 days ago) in Taurus

27.

June solstice 20 June will be the longest day of 2020 in the northern hemisphere. Sat, 20 Jun 2020 at 17:36 EDT (1,457 days ago) in Taurus

28.

The Ptolemy cluster is well placed The Ptolemy Cluster (M7, NGC 6475; mag 3.3) in Scorpius culminates at around midnight local time. Sat, 20 Jun 2020 (1,457 days ago) in Scorpius

29.

Annular solar eclipse There will be an eclipse of the Sun, visible from Asia and Africa. Sun, 21 Jun 2020 at 02:41 EDT (1,456 days ago) in Taurus

30.

New Moon The Moon disappears into the Sun's glare for a few days. Sun, 21 Jun 2020 at 02:42 EDT (1,456 days ago) in Taurus

31.

Conjunction of the Moon and Mercury The Moon and Mercury share the same right ascension, at a separation of 3°52'. Mon, 22 Jun 2020 at 03:19 EDT (1,455 days ago) in Gemini

32.

Comet C/2019 U6 (Lemmon) reaches peak brightness Comet C/2019 U6 (Lemmon) is forecast to reach the brightest point in its 2020 apparition. Mon, 22 Jun 2020 (1,455 days ago) in Hydra

33.

The Lagoon Nebula is well placed The Lagoon Nebula (M8; mag 5.8) in Sagittarius culminates at around midnight local time. Mon, 22 Jun 2020 (1,455 days ago) in Sagittarius

34.

Neptune enters retrograde motion Neptune reverses its direction of motion across the sky. Mon, 22 Jun 2020 at 22:58 EDT (1,455 days ago) in Aquarius

35.

Mercury at aphelion Mercury passes the furthest point along its orbit from the Sun. Tue, 23 Jun 2020 at 00:17 EDT (1,454 days ago) in Gemini

36.

NGC 6541 is well placed The globular cluster NGC 6541 (mag 6.6) in Corona Australis culminates at around midnight local time. Tue, 23 Jun 2020 (1,454 days ago) in Corona Australis

37.

Conjunction of Jupiter and Pluto Jupiter and Pluto share the same right ascension, at a separation of 41'. Thu, 25 Jun 2020 at 09:43 EDT (1,452 days ago) in Sagittarius

38.

June Bootid meteor shower 2020 The June Bootid meteor shower reaches its peak. Sat, 27 Jun 2020 (1,450 days ago) in Bootes

39.

Asteroid 7 Iris at opposition Asteroid 7 Iris makes closest approach to the Earth. Sat, 27 Jun 2020 at 17:34 EDT (1,450 days ago) in Sagittarius

40.

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. Sun, 28 Jun 2020 at 04:16 EDT (1,449 days ago) in Virgo