161.

Lunar occultation of Beta1 Scorpii The Moon will pass in front of Beta1 Scorpii (Acrab), creating a lunar occultation visible from Sub-Saharan Africa, Australia and Heard Island and McDonald Islands. Tue, 22 Jun 2021 at 14:28 EDT (1,048 days ago) in Scorpius

162.

June solstice 21 June will be the longest day of 2021 in the northern hemisphere. Sun, 20 Jun 2021 at 23:25 EDT (1,050 days ago) in Taurus

163.

The Ptolemy cluster is well placed The Ptolemy Cluster (M7, NGC 6475; mag 3.3) in Scorpius culminates at around midnight local time. Sun, 20 Jun 2021 (1,050 days ago) in Scorpius

164.

Jupiter enters retrograde motion Jupiter reverses its direction of motion across the sky. Sun, 20 Jun 2021 at 11:07 EDT (1,050 days ago) in Aquarius

165.

The cluster IC 4665 is well placed The open star cluster IC 4665 (mag 4.2) in Ophiuchus culminates at around midnight local time. Fri, 18 Jun 2021 (1,052 days ago) in Ophiuchus

166.

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 (1,053 days ago) in Virgo

167.

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 (1,053 days ago) in Ara

168.

Comet 15P/Finlay passes perigee Comet 15P/Finlay makes its closest approach to the Earth. Thu, 17 Jun 2021 (1,053 days ago) in Pisces

169.

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 (1,054 days ago) in Scorpius

170.

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 (1,055 days ago) in Scorpius

171.

Close approach of the Moon and Mars The Moon and Mars pass close to each other. Sun, 13 Jun 2021 at 16:47 EDT (1,057 days ago) in Cancer

172.

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 (1,057 days ago) in Cancer

173.

Venus at perihelion Venus passes its orbit's closest point to the Sun. Sat, 12 Jun 2021 at 17:18 EDT (1,058 days ago) in Gemini

174.

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 (1,058 days ago) in Gemini

175.

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 (1,059 days ago) in Hercules

176.

Mercury at inferior solar conjunction Mercury passes around the near side of the Sun. Thu, 10 Jun 2021 at 21:07 EDT (1,060 days ago) in Taurus

177.

Daytime Arietid meteor shower 2021 The Daytime Arietid meteor shower reaches its peak. Thu, 10 Jun 2021 (1,060 days ago) in Aries

178.

New Moon The Moon disappears into the Sun's glare for a few days. Thu, 10 Jun 2021 at 06:54 EDT (1,060 days ago) in Taurus

179.

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 (1,060 days ago) in Taurus

180.

Mercury at aphelion Mercury passes the furthest point along its orbit from the Sun. Wed, 09 Jun 2021 at 21:21 EDT (1,061 days ago) in Taurus