241.

Comet 21P/Giacobini-Zinner passes perihelion Comet 21P/Giacobini-Zinner makes its closest approach to the Sun. Thu, 13 Sep 2018 (2,051 days ago) in Auriga

242.

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 (2,053 days ago) in Virgo

243.

New Moon The Moon disappears into the Sun's glare for a few days. Sun, 09 Sep 2018 at 14:02 EDT (2,055 days ago) in Leo

244.

September ε-Perseid meteor shower 2018 The September ε-Perseid meteor shower reaches its peak. Sun, 09 Sep 2018 (2,055 days ago) in Perseus

245.

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 (2,057 days ago) in Leo

246.

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 (2,057 days ago) in Aquarius

247.

Close approach of the Moon and M44 The Moon and M44 pass close to each other. Thu, 06 Sep 2018 at 22:26 EDT (2,058 days ago) in Cancer

248.

Saturn ends retrograde motion Saturn returns to its usual eastward motion after opposition. Thu, 06 Sep 2018 at 07:19 EDT (2,058 days ago) in Sagittarius

249.

Venus at aphelion Venus passes the furthest point along its orbit from the Sun. Wed, 05 Sep 2018 at 07:32 EDT (2,059 days ago) in Virgo

250.

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 (2,062 days ago) in Taurus

251.

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 (2,062 days ago) in Taurus

252.

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 (2,062 days ago) in Taurus

253.

Mercury at perihelion Mercury passes its orbit's closest point to the Sun. Sun, 02 Sep 2018 at 05:42 EDT (2,062 days ago) in Leo

254.

Aurigid meteor shower 2018 The Aurigid meteor shower reaches its peak. Sat, 01 Sep 2018 (2,063 days ago) in Auriga

255.

Mercury at highest altitude in morning sky Mercury is bright and well placed in the dawn sky. Tue, 28 Aug 2018 (2,067 days ago) in Cancer

256.

Mercury at dichotomy Mercury reaches half phase in the dawn sky. Tue, 28 Aug 2018 at 07:08 EDT (2,067 days ago) in Cancer

257.

Mars ends retrograde motion Mars returns to its usual eastward motion after opposition. Mon, 27 Aug 2018 at 10:01 EDT (2,068 days ago) in Sagittarius

258.

Mercury at greatest elongation west Mercury is bright and well placed in the dawn sky. Sun, 26 Aug 2018 at 17:56 EDT (2,069 days ago) in Cancer

259.

Full Moon The Moon reaches full phase and is visible for much of the night. Sun, 26 Aug 2018 at 07:56 EDT (2,069 days ago) in Aquarius

260.

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. Fri, 24 Aug 2018 at 00:30 EDT (2,071 days ago) in Capricornus