21.

Lunar occultation of Neptune The Moon will pass in front of Neptune, creating a lunar occultation visible from South Georgia and the South Sandwich Islands, Bouvet Island, Saint Helena and Antarctica. Sat, 20 May 2017 at 01:46 EDT (2,541 days ago) in Aquarius

22.

Conjunction of the Moon and Venus The Moon and Venus share the same right ascension, at a separation of 2°23'. Mon, 22 May 2017 at 08:31 EDT (2,539 days ago) in Pisces

23.

Close approach of the Moon and Venus The Moon and Venus pass close to each other. Mon, 22 May 2017 at 09:55 EDT (2,539 days ago) in Pisces

24.

Supernova SN2017egm discovered A new supernova has been discovered in NGC 3191. Mon, 22 May 2017 (2,538 days ago)

25.

Mercury at dichotomy Mercury reaches half phase in the dawn sky. Tue, 23 May 2017 at 10:42 EDT (2,538 days ago) in Aries

26.

Mercury at highest altitude in morning sky Mercury is bright and well placed in the dawn sky. Tue, 23 May 2017 (2,538 days ago) in Pisces

27.

Conjunction of the Moon and Mercury The Moon and Mercury share the same right ascension, at a separation of 1°36'. Tue, 23 May 2017 at 21:19 EDT (2,538 days ago) in Aries

28.

Close approach of the Moon and Mercury The Moon and Mercury pass close to each other. Tue, 23 May 2017 at 22:07 EDT (2,538 days ago) in Aries

29.

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. Wed, 24 May 2017 at 05:25 EDT (2,537 days ago) in Aries

30.

Supernova SN2017ein discovered A new supernova has been discovered in NGC 3938. Wed, 24 May 2017 (2,536 days ago)

31.

New Moon The Moon disappears into the Sun's glare for a few days. Thu, 25 May 2017 at 15:45 EDT (2,536 days ago) in Taurus

32.

The Moon at perigee The Moon makes its monthly closest approach to the Earth, making it appear fractionally larger than at other times of the month. Thu, 25 May 2017 at 21:20 EDT (2,536 days ago) in Taurus

33.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 5°21'. Fri, 26 May 2017 at 21:56 EDT (2,535 days ago) in Taurus

34.

Messier 4 is well placed The globular cluster M4 (NGC 6121; mag 5.4) in Scorpius culminates at around midnight local time. Sun, 28 May 2017 (2,533 days ago) in Scorpius

35.

Lunar occultation of Regulus The Moon will pass in front of Regulus (Alpha Leonis), creating a lunar occultation visible from Africa. Wed, 31 May 2017 at 12:25 EDT (2,530 days ago) in Leo

36.

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, 01 Jun 2017 at 08:42 EDT (2,529 days ago) in Leo

37.

Conjunction of Venus and Uranus Venus and Uranus share the same right ascension, at a separation of 1°46'. Fri, 02 Jun 2017 at 10:40 EDT (2,528 days ago) in Pisces

38.

The Great Globular Cluster in Hercules is well placed The Great Globular Cluster in Hercules (M13, NGC 6205; mag 5.8) culminates at around midnight local time. Fri, 02 Jun 2017 (2,528 days ago) in Hercules

39.

Venus at greatest elongation west Venus is bright and well placed in the dawn sky. Sat, 03 Jun 2017 at 02:11 EDT (2,527 days ago) in Pisces

40.

Messier 12 is well placed The globular cluster M12 (NGC 6218; mag 6.1) in Ophiuchus culminates at around midnight local time. Sat, 03 Jun 2017 (2,527 days ago) in Ophiuchus