181.

Mars at solar conjunction Mars is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Mon, 02 Sep 2019 at 06:17 EDT (1,692 days ago) in Leo

182.

Mercury at superior solar conjunction Mercury passes around the far side of the Sun. Tue, 03 Sep 2019 at 21:48 EDT (1,691 days ago) in Leo

183.

Comet C/2018 W2 (Africano) passes perihelion Comet C/2018 W2 (Africano) makes its closest approach to the Sun. Thu, 05 Sep 2019 (1,689 days ago) in Perseus

184.

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. Thu, 05 Sep 2019 at 23:11 EDT (1,689 days ago) in Ophiuchus

185.

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 (1,688 days ago) in Ophiuchus

186.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Fri, 06 Sep 2019 at 03:39 EDT (1,688 days ago) in Ophiuchus

187.

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 (1,686 days ago) in Sagittarius

188.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Sun, 08 Sep 2019 at 09:41 EDT (1,686 days ago) in Sagittarius

189.

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 (1,686 days ago) in Sagittarius

190.

September ε-Perseid meteor shower 2019 The September ε-Perseid meteor shower reaches its peak. Mon, 09 Sep 2019 (1,685 days ago) in Perseus

191.

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 (1,684 days ago) in Aquarius

192.

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 (1,683 days ago) in Capricornus

193.

Comet 260P/McNaught passes perihelion Comet 260P/McNaught makes its closest approach to the Sun. Wed, 11 Sep 2019 (1,683 days ago) in Aries

194.

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 (1,681 days ago) in Aquarius

195.

Full Moon The Moon reaches full phase and is visible for much of the night. Sat, 14 Sep 2019 at 00:32 EDT (1,680 days ago) in Aquarius

196.

Saturn ends retrograde motion Saturn returns to its usual eastward motion after opposition. Wed, 18 Sep 2019 at 04:25 EDT (1,676 days ago) in Sagittarius

197.

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 (1,673 days ago) in Orion

198.

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 (1,671 days ago) in Virgo

199.

Close approach of the Moon and M44 The Moon and M44 pass close to each other. Tue, 24 Sep 2019 at 18:00 EDT (1,670 days ago) in Cancer

200.

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 (1,669 days ago) in Sculptor