161.

Mercury at greatest elongation west Mercury is bright and well placed in the dawn sky. Wed, 17 May 2017 at 19:06 EDT (2,597 days ago) in Pisces

162.

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. Thu, 18 May 2017 at 20:33 EDT (2,596 days ago) in Aquarius

163.

Close approach of the Moon and Neptune The Moon and Neptune pass close to each other. Sat, 20 May 2017 at 01:46 EDT (2,594 days ago) in Aquarius

164.

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 (2,594 days ago) in Aquarius

165.

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 (2,592 days ago) in Pisces

166.

Close approach of the Moon and Venus The Moon and Venus pass close to each other. Mon, 22 May 2017 at 09:55 EDT (2,592 days ago) in Pisces

167.

Supernova SN2017egm discovered A new supernova has been discovered in NGC 3191. Mon, 22 May 2017 (2,591 days ago)

168.

Mercury at dichotomy Mercury reaches half phase in the dawn sky. Tue, 23 May 2017 at 10:42 EDT (2,591 days ago) in Aries

169.

Mercury at highest altitude in morning sky Mercury is bright and well placed in the dawn sky. Tue, 23 May 2017 (2,591 days ago) in Pisces

170.

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 (2,591 days ago) in Aries

171.

Close approach of the Moon and Mercury The Moon and Mercury pass close to each other. Tue, 23 May 2017 at 22:07 EDT (2,591 days ago) in Aries

172.

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 (2,590 days ago) in Aries

173.

Supernova SN2017ein discovered A new supernova has been discovered in NGC 3938. Wed, 24 May 2017 (2,589 days ago)

174.

New Moon The Moon disappears into the Sun's glare for a few days. Thu, 25 May 2017 at 15:45 EDT (2,589 days ago) in Taurus

175.

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 (2,589 days ago) in Taurus

176.

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 (2,588 days ago) in Taurus

177.

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 (2,586 days ago) in Scorpius

178.

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 (2,583 days ago) in Leo

179.

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 (2,582 days ago) in Leo

180.

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 (2,581 days ago) in Pisces