221.

Lunar occultation of Venus The Moon will pass in front of Venus, creating a lunar occultation visible from countries and territories including Australia, Indonesia, New Zealand and Papua New Guinea amongst others. Sun, 17 Sep 2017 at 20:39 EDT (2,436 days ago) in Leo

222.

Close approach of the Moon and Venus The Moon and Venus pass close to each other. Sun, 17 Sep 2017 at 20:39 EDT (2,436 days ago) in Leo

223.

Supernova SN2017gxq discovered A new supernova has been discovered in NGC 4964. Sat, 16 Sep 2017 (2,436 days ago)

224.

Conjunction of Mercury and Mars Mercury and Mars share the same right ascension, at a separation of 3'22". Sat, 16 Sep 2017 at 14:23 EDT (2,437 days ago) in Leo

225.

Mercury at perihelion Mercury passes its orbit's closest point to the Sun. Fri, 15 Sep 2017 at 08:33 EDT (2,438 days ago) in Leo

226.

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. Wed, 13 Sep 2017 at 12:06 EDT (2,440 days ago) in Taurus

227.

Mercury at highest altitude in morning sky Mercury is bright and well placed in the dawn sky. Wed, 13 Sep 2017 (2,440 days ago) in Leo

228.

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. Wed, 13 Sep 2017 at 02:25 EDT (2,440 days ago) in Taurus

229.

Mercury at dichotomy Mercury reaches half phase in the dawn sky. Tue, 12 Sep 2017 at 23:41 EDT (2,441 days ago) in Leo

230.

Lunar occultation of Aldebaran The Moon will pass in front of Aldebaran (Alpha Tauri), creating a lunar occultation visible from countries and territories including the Contiguous United States, Canada, Mexico and Alaska amongst others. Tue, 12 Sep 2017 at 08:26 EDT (2,441 days ago) in Taurus

231.

Mercury at greatest elongation west Mercury is bright and well placed in the dawn sky. Tue, 12 Sep 2017 at 05:19 EDT (2,441 days ago) in Leo

232.

Close approach of the Moon and Collinder 50 The Moon and Collinder 50 pass close to each other. Tue, 12 Sep 2017 at 04:42 EDT (2,441 days ago) in Taurus

233.

Comet 1I/`Oumuamua passes perihelion Comet 1I/`Oumuamua makes its closest approach to the Sun. Sat, 09 Sep 2017 (2,444 days ago) in Leo

234.

September ε-Perseid meteor shower 2017 The September ε-Perseid meteor shower reaches its peak. Sat, 09 Sep 2017 (2,444 days ago) in Perseus

235.

Asteroid 89 Julia at opposition Asteroid 89 Julia makes closest approach to the Earth. Thu, 07 Sep 2017 at 15:10 EDT (2,446 days ago) in Pegasus

236.

Full Moon The Moon reaches full phase and is visible for much of the night. Wed, 06 Sep 2017 at 03:02 EDT (2,447 days ago) in Aquarius

237.

Lunar occultation of Neptune The Moon will pass in front of Neptune, creating a lunar occultation visible from countries and territories including Antarctica, Argentina, Chile and Brazil amongst others. Wed, 06 Sep 2017 at 00:59 EDT (2,447 days ago) in Aquarius

238.

Neptune at opposition Neptune lies in the opposite direction to the Sun in the sky, making it optimally positioned to be observable for much of the night. Tue, 05 Sep 2017 at 01:19 EDT (2,448 days ago) in Aquarius

239.

Supernova SN2017gmr discovered A new supernova has been discovered in NGC 988. Sun, 03 Sep 2017 (2,449 days ago)

240.

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. Sun, 03 Sep 2017 at 13:06 EDT (2,450 days ago) in Capricornus