121.

Saturn enters retrograde motion Saturn reverses its direction of motion across the sky. Sat, 17 Jun 2023 at 12:51 EDT (311 days ago) in Aquarius

122.

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. Sat, 17 Jun 2023 (311 days ago) in Scorpius

123.

NGC 6397 is well placed The globular cluster NGC 6397 (mag 5.6) in Ara culminates at around midnight local time. Sat, 17 Jun 2023 (311 days ago) in Ara

124.

New Moon The Moon disappears into the Sun's glare for a few days. Sun, 18 Jun 2023 at 00:38 EDT (310 days ago) in Taurus

125.

The cluster IC 4665 is well placed The open star cluster IC 4665 (mag 4.2) in Ophiuchus culminates at around midnight local time. Sun, 18 Jun 2023 (310 days ago) in Ophiuchus

126.

The Ptolemy cluster is well placed The Ptolemy Cluster (M7, NGC 6475; mag 3.3) in Scorpius culminates at around midnight local time. Tue, 20 Jun 2023 (308 days ago) in Scorpius

127.

June solstice 21 June will be the longest day of 2023 in the northern hemisphere. Wed, 21 Jun 2023 at 10:54 EDT (307 days ago) in Taurus

128.

Conjunction of the Moon and Venus The Moon and Venus share the same right ascension, at a separation of 3°41'. Wed, 21 Jun 2023 at 20:48 EDT (307 days ago) in Cancer

129.

Close approach of the Moon and Venus The Moon and Venus pass close to each other. Wed, 21 Jun 2023 at 23:13 EDT (307 days ago) in Cancer

130.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 3°47'. Thu, 22 Jun 2023 at 06:10 EDT (306 days ago) in Leo

131.

Close approach of the Moon and Mars The Moon and Mars pass close to each other. Thu, 22 Jun 2023 at 08:54 EDT (306 days ago) in Leo

132.

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. Thu, 22 Jun 2023 at 14:30 EDT (306 days ago) in Leo

133.

The Lagoon Nebula is well placed The Lagoon Nebula (M8; mag 5.8) in Sagittarius culminates at around midnight local time. Fri, 23 Jun 2023 (305 days ago) in Sagittarius

134.

NGC 6541 is well placed The globular cluster NGC 6541 (mag 6.6) in Corona Australis culminates at around midnight local time. Sat, 24 Jun 2023 (304 days ago) in Corona Australis

135.

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. Mon, 26 Jun 2023 at 03:50 EDT (302 days ago) in Virgo

136.

Mercury at perihelion Mercury passes its orbit's closest point to the Sun. Tue, 27 Jun 2023 at 15:17 EDT (301 days ago) in Gemini

137.

June Bootid meteor shower 2023 The June Bootid meteor shower reaches its peak. Tue, 27 Jun 2023 (301 days ago) in Bootes

138.

The cluster NGC 6633 is well placed The open star cluster NGC 6633 (mag 4.6) in Ophiuchus culminates at around midnight local time. Thu, 29 Jun 2023 (299 days ago) in Ophiuchus

139.

Neptune enters retrograde motion Neptune reverses its direction of motion across the sky. Fri, 30 Jun 2023 at 15:28 EDT (298 days ago) in Pisces

140.

Lunar occultation of Delta Scorpii The Moon will pass in front of Delta Scorpii (Dschubba), creating a lunar occultation visible from countries and territories including Antarctica, French Southern Territories, South Georgia and the South Sandwich Islands and Heard Island and McDonald Islands amongst others. Fri, 30 Jun 2023 at 15:54 EDT (298 days ago) in Scorpius