321.

Asteroid 21 Lutetia at opposition Asteroid 21 Lutetia makes closest approach to the Earth. Fri, 27 Sep 2019 at 19:58 EDT (1,734 days ago) in Pisces

322.

Daytime Sextantid meteor shower 2019 The Daytime Sextantid meteor shower reaches its peak. Fri, 27 Sep 2019 (1,734 days ago) in Sextans

323.

Comet C/2018 W2 (Africano) passes perigee Comet C/2018 W2 (Africano) makes its closest approach to the Earth. Fri, 27 Sep 2019 (1,734 days ago) in Pegasus

324.

Comet C/2018 W2 (Africano) reaches peak brightness Comet C/2018 W2 (Africano) is forecast to reach the brightest point in its 2019 apparition. Thu, 26 Sep 2019 (1,735 days ago) in Pegasus

325.

NGC 55 is well placed NGC 55 (mag 8.2), a barred irregular galaxy in Sculptor culminates at around midnight local time. Wed, 25 Sep 2019 (1,736 days ago) in Sculptor

326.

Close approach of the Moon and M44 The Moon and M44 pass close to each other. Tue, 24 Sep 2019 at 18:00 EDT (1,737 days ago) in Cancer

327.

September equinox Day and night have equal length, marking the beginning of autumn in the northern hemisphere and spring in the southern hemisphere. Mon, 23 Sep 2019 at 03:43 EDT (1,738 days ago) in Virgo

328.

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. Sat, 21 Sep 2019 at 22:41 EDT (1,740 days ago) in Orion

329.

Saturn ends retrograde motion Saturn returns to its usual eastward motion after opposition. Wed, 18 Sep 2019 at 04:25 EDT (1,743 days ago) in Sagittarius

330.

Full Moon The Moon reaches full phase and is visible for much of the night. Sat, 14 Sep 2019 at 00:32 EDT (1,747 days ago) in Aquarius

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. Fri, 13 Sep 2019 at 09:32 EDT (1,748 days ago) in Aquarius

332.

Comet 260P/McNaught passes perihelion Comet 260P/McNaught makes its closest approach to the Sun. Wed, 11 Sep 2019 (1,750 days ago) in Aries

333.

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. Wed, 11 Sep 2019 at 06:15 EDT (1,750 days ago) in Capricornus

334.

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, 10 Sep 2019 at 03:15 EDT (1,751 days ago) in Aquarius

335.

September ε-Perseid meteor shower 2019 The September ε-Perseid meteor shower reaches its peak. Mon, 09 Sep 2019 (1,752 days ago) in Perseus

336.

Lunar occultation of Saturn The Moon will pass in front of Saturn, creating a lunar occultation visible from countries and territories including Australia, Indonesia, Papua New Guinea and East Timor amongst others. Sun, 08 Sep 2019 at 09:41 EDT (1,753 days ago) in Sagittarius

337.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Sun, 08 Sep 2019 at 09:41 EDT (1,753 days ago) in Sagittarius

338.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 2'24". Sun, 08 Sep 2019 at 09:41 EDT (1,753 days ago) in Sagittarius

339.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Fri, 06 Sep 2019 at 03:39 EDT (1,755 days ago) in Ophiuchus

340.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 2°18'. Fri, 06 Sep 2019 at 02:51 EDT (1,755 days ago) in Ophiuchus