321.

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 12:39 PDT (2,464 days ago) in Virgo

322.

Supernova SN2017gjn discovered A new supernova has been discovered in NGC 1067. Wed, 23 Aug 2017 (2,463 days ago)

323.

Saturn ends retrograde motion Saturn returns to its usual eastward motion after opposition. Fri, 25 Aug 2017 at 04:39 PDT (2,462 days ago) in Ophiuchus

324.

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 06:01 PDT (2,462 days ago) in Virgo

325.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Fri, 25 Aug 2017 at 08:11 PDT (2,462 days ago) in Virgo

326.

Mercury at inferior solar conjunction Mercury passes around the near side of the Sun. Sat, 26 Aug 2017 at 13:37 PDT (2,461 days ago) in Sextans

327.

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 01:13 PDT (2,458 days ago) in Scorpius

328.

Asteroid 3122 Florence at opposition Asteroid 3122 Florence makes closest approach to the Earth. Tue, 29 Aug 2017 at 19:22 PDT (2,458 days ago) in Capricornus

329.

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 04:24 PDT (2,457 days ago) in Ophiuchus

330.

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 07:02 PDT (2,457 days ago) in Ophiuchus

331.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Wed, 30 Aug 2017 at 07:49 PDT (2,457 days ago) in Ophiuchus

332.

Aurigid meteor shower 2017 The Aurigid meteor shower reaches its peak. Thu, 31 Aug 2017 (2,455 days ago) in Auriga

333.

Close approach of Venus and M44 Venus and M44 pass close to each other. Fri, 01 Sep 2017 at 06:47 PDT (2,455 days ago) in Cancer

334.

Supernova SN2017glq discovered A new supernova has been discovered in IC 208. Fri, 01 Sep 2017 (2,454 days ago)

335.

Supernova SN2017glx discovered A new supernova has been discovered in NGC 6824. Sat, 02 Sep 2017 (2,453 days ago)

336.

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 10:06 PDT (2,453 days ago) in Capricornus

337.

Supernova SN2017gmr discovered A new supernova has been discovered in NGC 988. Sun, 03 Sep 2017 (2,452 days ago)

338.

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. Mon, 04 Sep 2017 at 22:19 PDT (2,452 days ago) in Aquarius

339.

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. Tue, 05 Sep 2017 at 21:59 PDT (2,451 days ago) in Aquarius

340.

Full Moon The Moon reaches full phase and is visible for much of the night. Wed, 06 Sep 2017 at 00:02 PDT (2,450 days ago) in Aquarius