281.

Messier 15 is well placed The globular cluster M15 (NGC 7078; mag 6.3) in Pegasus culminates at around midnight local time. Mon, 14 Aug 2017 (2,508 days ago) in Pegasus

282.

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. Mon, 14 Aug 2017 at 21:15 EDT (2,508 days ago) in Taurus

283.

Messier 2 is well placed The globular cluster M2 (NGC 7089; mag 6.6) in Aquarius culminates at around midnight local time. Tue, 15 Aug 2017 (2,507 days ago) in Aquarius

284.

Close approach of the Moon and Collinder 50 The Moon and Collinder 50 pass close to each other. Tue, 15 Aug 2017 at 23:15 EDT (2,507 days ago) in Taurus

285.

Lunar occultation of Aldebaran The Moon will pass in front of Aldebaran (Alpha Tauri), creating a lunar occultation visible from Africa, the Americas, Bonaire, Saint Eustatius and Saba, Grenada, the Portuguese Azores, Madeira, the Savage Islands and the Canary Islands. Wed, 16 Aug 2017 at 02:57 EDT (2,506 days ago) in Taurus

286.

κ-Cygnid meteor shower 2017 The κ-Cygnid meteor shower reaches its peak. Thu, 17 Aug 2017 (2,505 days ago) in Draco

287.

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. Fri, 18 Aug 2017 at 09:18 EDT (2,504 days ago) in Gemini

288.

Supernova SN2017gkk discovered A new supernova has been discovered in NGC 2748. Fri, 18 Aug 2017 (2,503 days ago)

289.

Close approach of the Moon and Venus The Moon and Venus pass close to each other. Sat, 19 Aug 2017 at 00:25 EDT (2,503 days ago) in Gemini

290.

Conjunction of the Moon and Venus The Moon and Venus share the same right ascension, at a separation of 2°14'. Sat, 19 Aug 2017 at 00:43 EDT (2,503 days ago) in Gemini

291.

Total solar eclipse There will be an eclipse of the Sun, visible from the Contiguous United States. Mon, 21 Aug 2017 at 14:25 EDT (2,501 days ago) in Leo

292.

New Moon The Moon disappears into the Sun's glare for a few days. Mon, 21 Aug 2017 at 14:31 EDT (2,501 days ago) in Leo

293.

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, 23 Aug 2017 at 15:39 EDT (2,499 days ago) in Virgo

294.

Supernova SN2017gjn discovered A new supernova has been discovered in NGC 1067. Wed, 23 Aug 2017 (2,498 days ago)

295.

Saturn ends retrograde motion Saturn returns to its usual eastward motion after opposition. Fri, 25 Aug 2017 at 07:39 EDT (2,497 days ago) in Ophiuchus

296.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 3°29'. Fri, 25 Aug 2017 at 09:01 EDT (2,497 days ago) in Virgo

297.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Fri, 25 Aug 2017 at 11:11 EDT (2,497 days ago) in Virgo

298.

Mercury at inferior solar conjunction Mercury passes around the near side of the Sun. Sat, 26 Aug 2017 at 16:37 EDT (2,496 days ago) in Sextans

299.

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. Tue, 29 Aug 2017 at 04:13 EDT (2,493 days ago) in Scorpius

300.

Asteroid 3122 Florence at opposition Asteroid 3122 Florence makes closest approach to the Earth. Tue, 29 Aug 2017 at 22:22 EDT (2,493 days ago) in Capricornus