81.

Mercury at superior solar conjunction Mercury passes around the far side of the Sun. Wed, 21 Jun 2017 at 10:20 EDT (2,513 days ago) in Gemini

82.

June solstice 21 June will be the longest day of 2017 in the northern hemisphere. Wed, 21 Jun 2017 at 00:19 EDT (2,513 days ago) in Taurus

83.

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 2017 (2,514 days ago) in Scorpius

84.

Close approach of the Moon and Venus The Moon and Venus pass close to each other. Tue, 20 Jun 2017 at 18:20 EDT (2,514 days ago) in Aries

85.

Conjunction of the Moon and Venus The Moon and Venus share the same right ascension, at a separation of 2°22'. Tue, 20 Jun 2017 at 17:11 EDT (2,514 days ago) in Aries

86.

Mercury at perihelion Mercury passes its orbit's closest point to the Sun. Mon, 19 Jun 2017 at 09:42 EDT (2,515 days ago) in Taurus

87.

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 2017 (2,516 days ago) in Ophiuchus

88.

Asteroid 6 Hebe at opposition Asteroid 6 Hebe makes closest approach to the Earth. Sun, 18 Jun 2017 at 00:46 EDT (2,516 days ago) in Ophiuchus

89.

NGC 6397 is well placed The globular cluster NGC 6397 (mag 5.6) in Ara culminates at around midnight local time. Sat, 17 Jun 2017 (2,517 days ago) in Ara

90.

Moon at Last Quarter The Moon reaches last quarter phase – rising in the east at around midnight and appearing high in the sky by sunrise. Sat, 17 Jun 2017 at 07:33 EDT (2,517 days ago) in Aquarius

91.

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. Fri, 16 Jun 2017 (2,518 days ago) in Scorpius

92.

Lunar occultation of Neptune The Moon will pass in front of Neptune, creating a lunar occultation visible from Antarctica. Fri, 16 Jun 2017 at 09:03 EDT (2,518 days ago) in Aquarius

93.

Neptune enters retrograde motion Neptune reverses its direction of motion across the sky. Fri, 16 Jun 2017 at 07:41 EDT (2,518 days ago) in Aquarius

94.

NGC 6388 is well placed The globular cluster NGC 6388 (mag 6.8) in Scorpius culminates at around midnight local time. Thu, 15 Jun 2017 (2,519 days ago) in Scorpius

95.

Saturn at opposition Saturn lies in the opposite direction to the Sun in the sky, making it slightly closer, brighter and larger than at other times. It is also optimally positioned to be observable for much of the night. Thu, 15 Jun 2017 at 06:09 EDT (2,519 days ago) in Ophiuchus

96.

Venus at aphelion Venus passes the furthest point along its orbit from the Sun. Mon, 12 Jun 2017 at 20:42 EDT (2,522 days ago) in Aries

97.

Supernova SN2017erp discovered A new supernova has been discovered in NGC 5861. Mon, 12 Jun 2017 (2,521 days ago)

98.

Messier 92 is well placed The globular cluster M92 (NGC 6341; mag 6.5) in Hercules culminates at around midnight local time. Sun, 11 Jun 2017 (2,523 days ago) in Hercules

99.

The Moon at aphelion The Moon recedes to its orbit's furthest point from the Sun, which happens each month around the time of full moon. Sat, 10 Jun 2017 at 11:59 EDT (2,524 days ago) in Sagittarius

100.

Daytime Arietid meteor shower 2017 The Daytime Arietid meteor shower reaches its peak. Sat, 10 Jun 2017 (2,524 days ago) in Aries