321.

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 (2,453 days ago) in Leo

322.

New Moon The Moon disappears into the Sun's glare for a few days. Mon, 21 Aug 2017 at 14:31 EDT (2,453 days ago) in Leo

323.

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 (2,451 days ago) in Virgo

324.

Supernova SN2017gjn discovered A new supernova has been discovered in NGC 1067. Wed, 23 Aug 2017 (2,450 days ago)

325.

Saturn ends retrograde motion Saturn returns to its usual eastward motion after opposition. Fri, 25 Aug 2017 at 07:39 EDT (2,449 days ago) in Ophiuchus

326.

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 (2,449 days ago) in Virgo

327.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Fri, 25 Aug 2017 at 11:11 EDT (2,449 days ago) in Virgo

328.

Mercury at inferior solar conjunction Mercury passes around the near side of the Sun. Sat, 26 Aug 2017 at 16:37 EDT (2,448 days ago) in Sextans

329.

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 (2,445 days ago) in Scorpius

330.

Asteroid 3122 Florence at opposition Asteroid 3122 Florence makes closest approach to the Earth. Tue, 29 Aug 2017 at 22:22 EDT (2,445 days ago) in Capricornus

331.

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. Wed, 30 Aug 2017 at 07:24 EDT (2,444 days ago) in Ophiuchus

332.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 3°33'. Wed, 30 Aug 2017 at 10:02 EDT (2,444 days ago) in Ophiuchus

333.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Wed, 30 Aug 2017 at 10:49 EDT (2,444 days ago) in Ophiuchus

334.

Aurigid meteor shower 2017 The Aurigid meteor shower reaches its peak. Thu, 31 Aug 2017 (2,442 days ago) in Auriga

335.

Close approach of Venus and M44 Venus and M44 pass close to each other. Fri, 01 Sep 2017 at 09:47 EDT (2,442 days ago) in Cancer

336.

Supernova SN2017glq discovered A new supernova has been discovered in IC 208. Fri, 01 Sep 2017 (2,441 days ago)

337.

Supernova SN2017glx discovered A new supernova has been discovered in NGC 6824. Sat, 02 Sep 2017 (2,440 days ago)

338.

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 (2,440 days ago) in Capricornus

339.

Supernova SN2017gmr discovered A new supernova has been discovered in NGC 988. Sun, 03 Sep 2017 (2,439 days ago)

340.

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 (2,438 days ago) in Aquarius