21.

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 (2,510 days ago) in Scorpius

22.

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 (2,510 days ago) in Aquarius

23.

Neptune enters retrograde motion Neptune reverses its direction of motion across the sky. Fri, 16 Jun 2017 at 07:41 EDT (2,510 days ago) in Aquarius

24.

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 (2,511 days ago) in Scorpius

25.

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 (2,511 days ago) in Ophiuchus

26.

Venus at aphelion Venus passes the furthest point along its orbit from the Sun. Mon, 12 Jun 2017 at 20:42 EDT (2,514 days ago) in Aries

27.

Supernova SN2017erp discovered A new supernova has been discovered in NGC 5861. Mon, 12 Jun 2017 (2,513 days ago)

28.

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 (2,515 days ago) in Hercules

29.

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 (2,516 days ago) in Sagittarius

30.

Daytime Arietid meteor shower 2017 The Daytime Arietid meteor shower reaches its peak. Sat, 10 Jun 2017 (2,516 days ago) in Aries

31.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Fri, 09 Jun 2017 at 21:33 EDT (2,517 days ago) in Ophiuchus

32.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 3°04'. Fri, 09 Jun 2017 at 21:03 EDT (2,517 days ago) in Ophiuchus

33.

Jupiter ends retrograde motion Jupiter returns to its usual eastward motion after opposition. Fri, 09 Jun 2017 at 10:12 EDT (2,517 days ago) in Virgo

34.

Full Moon The Moon reaches full phase and is visible for much of the night. Fri, 09 Jun 2017 at 09:09 EDT (2,517 days ago) in Ophiuchus

35.

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, 08 Jun 2017 at 18:21 EDT (2,518 days ago) in Ophiuchus

36.

Messier 62 is well placed The globular cluster M62 (NGC 6266; mag 6.4) in Ophiuchus culminates at around midnight local time. Wed, 07 Jun 2017 (2,519 days ago) in Ophiuchus

37.

Messier 10 is well placed The globular cluster M10 (NGC 6254; mag 6.6) in Ophiuchus culminates at around midnight local time. Mon, 05 Jun 2017 (2,521 days ago) in Ophiuchus

38.

1 Ceres at solar conjunction 1 Ceres is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Mon, 05 Jun 2017 at 09:51 EDT (2,521 days ago) in Taurus

39.

Venus at dichotomy Venus reaches half phase in the dawn sky. Sun, 04 Jun 2017 at 02:05 EDT (2,522 days ago) in Pisces

40.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Sat, 03 Jun 2017 at 21:27 EDT (2,523 days ago) in Virgo