1.

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. Sun, 01 Sep 2019 at 01:41 EDT (1,701 days ago) in Virgo

2.

Aurigid meteor shower 2019 The Aurigid meteor shower reaches its peak. Sun, 01 Sep 2019 (1,701 days ago) in Auriga

3.

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 (1,700 days ago) in Leo

4.

Mercury at superior solar conjunction Mercury passes around the far side of the Sun. Tue, 03 Sep 2019 at 21:48 EDT (1,699 days ago) in Leo

5.

Comet C/2018 W2 (Africano) passes perihelion Comet C/2018 W2 (Africano) makes its closest approach to the Sun. Thu, 05 Sep 2019 (1,697 days ago) in Perseus

6.

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 (1,697 days ago) in Ophiuchus

7.

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 (1,696 days ago) in Ophiuchus

8.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Fri, 06 Sep 2019 at 03:39 EDT (1,696 days ago) in Ophiuchus

9.

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 (1,694 days ago) in Sagittarius

10.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Sun, 08 Sep 2019 at 09:41 EDT (1,694 days ago) in Sagittarius

11.

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 (1,694 days ago) in Sagittarius

12.

September ε-Perseid meteor shower 2019 The September ε-Perseid meteor shower reaches its peak. Mon, 09 Sep 2019 (1,693 days ago) in Perseus

13.

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 (1,692 days ago) in Aquarius

14.

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 (1,691 days ago) in Capricornus

15.

Comet 260P/McNaught passes perihelion Comet 260P/McNaught makes its closest approach to the Sun. Wed, 11 Sep 2019 (1,691 days ago) in Aries

16.

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 (1,689 days ago) in Aquarius

17.

Full Moon The Moon reaches full phase and is visible for much of the night. Sat, 14 Sep 2019 at 00:32 EDT (1,688 days ago) in Aquarius

18.

Saturn ends retrograde motion Saturn returns to its usual eastward motion after opposition. Wed, 18 Sep 2019 at 04:25 EDT (1,684 days ago) in Sagittarius

19.

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 (1,681 days ago) in Orion

20.

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 (1,679 days ago) in Virgo