301.

Mercury at dichotomy Mercury reaches half phase in the dawn sky. Tue, 28 Aug 2018 at 07:08 EDT (2,072 days ago) in Cancer

302.

Mercury at highest altitude in morning sky Mercury is bright and well placed in the dawn sky. Tue, 28 Aug 2018 (2,072 days ago) in Cancer

303.

Aurigid meteor shower 2018 The Aurigid meteor shower reaches its peak. Sat, 01 Sep 2018 (2,068 days ago) in Auriga

304.

Mercury at perihelion Mercury passes its orbit's closest point to the Sun. Sun, 02 Sep 2018 at 05:42 EDT (2,067 days ago) in Leo

305.

Close approach of the Moon and Collinder 50 The Moon and Collinder 50 pass close to each other. Sun, 02 Sep 2018 at 17:45 EDT (2,067 days ago) in Taurus

306.

Lunar occultation of Aldebaran The Moon will pass in front of Aldebaran (Alpha Tauri), creating a lunar occultation visible from Greenland, Iceland and Canada. Sun, 02 Sep 2018 at 21:36 EDT (2,067 days ago) in Taurus

307.

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. Sun, 02 Sep 2018 at 22:37 EDT (2,067 days ago) in Taurus

308.

Venus at aphelion Venus passes the furthest point along its orbit from the Sun. Wed, 05 Sep 2018 at 07:32 EDT (2,064 days ago) in Virgo

309.

Saturn ends retrograde motion Saturn returns to its usual eastward motion after opposition. Thu, 06 Sep 2018 at 07:19 EDT (2,063 days ago) in Sagittarius

310.

Close approach of the Moon and M44 The Moon and M44 pass close to each other. Thu, 06 Sep 2018 at 22:26 EDT (2,063 days ago) in Cancer

311.

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. Fri, 07 Sep 2018 at 14:18 EDT (2,062 days ago) in Aquarius

312.

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, 07 Sep 2018 at 21:19 EDT (2,062 days ago) in Leo

313.

September ε-Perseid meteor shower 2018 The September ε-Perseid meteor shower reaches its peak. Sun, 09 Sep 2018 (2,060 days ago) in Perseus

314.

New Moon The Moon disappears into the Sun's glare for a few days. Sun, 09 Sep 2018 at 14:02 EDT (2,060 days ago) in Leo

315.

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. Tue, 11 Sep 2018 at 22:12 EDT (2,058 days ago) in Virgo

316.

Comet 21P/Giacobini-Zinner passes perihelion Comet 21P/Giacobini-Zinner makes its closest approach to the Sun. Thu, 13 Sep 2018 (2,056 days ago) in Auriga

317.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 4°22'. Thu, 13 Sep 2018 at 22:19 EDT (2,056 days ago) in Libra

318.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Fri, 14 Sep 2018 at 00:43 EDT (2,055 days ago) in Libra

319.

Mars at perihelion Mars passes its orbit's closest point to the Sun. Sun, 16 Sep 2018 at 08:53 EDT (2,053 days ago) in Capricornus

320.

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. Sun, 16 Sep 2018 at 19:15 EDT (2,053 days ago) in Ophiuchus