1.

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 03:15 PDT (2,131 days ago) in Capricornus

2.

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 06:32 PDT (2,129 days ago) in Aquarius

3.

Full Moon The Moon reaches full phase and is visible for much of the night. Fri, 13 Sep 2019 at 21:32 PDT (2,129 days ago) in Aquarius

4.

Saturn ends retrograde motion Saturn returns to its usual eastward motion after opposition. Wed, 18 Sep 2019 at 01:25 PDT (2,124 days ago) in Sagittarius

5.

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 19:41 PDT (2,121 days ago) in Orion

6.

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 00:43 PDT (2,119 days ago) in Virgo

7.

Close approach of the Moon and M44 The Moon and M44 pass close to each other. Tue, 24 Sep 2019 at 15:00 PDT (2,118 days ago) in Cancer

8.

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 (2,117 days ago) in Sculptor

9.

Asteroid 21 Lutetia at opposition Asteroid 21 Lutetia makes closest approach to the Earth. Fri, 27 Sep 2019 at 02:34 PDT (2,115 days ago) in Pisces

10.

Daytime Sextantid meteor shower 2019 The Daytime Sextantid meteor shower reaches its peak. Fri, 27 Sep 2019 (2,115 days ago) in Sextans

11.

47 Tuc is well placed The second brightest globular cluster in the sky, 47 Tuc (NGC 104; mag 4.0), in Tucana culminates at around midnight local time. Fri, 27 Sep 2019 (2,115 days ago) in Tucana

12.

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, 27 Sep 2019 at 19:23 PDT (2,115 days ago) in Virgo

13.

New Moon The Moon disappears into the Sun's glare for a few days. Sat, 28 Sep 2019 at 11:27 PDT (2,114 days ago) in Virgo

14.

136472 Makemake at solar conjunction 136472 Makemake is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Sat, 28 Sep 2019 at 12:05 PDT (2,114 days ago) in Coma Berenices

15.

Conjunction of the Moon and Mercury The Moon and Mercury share the same right ascension, at a separation of 6°14'. Sun, 29 Sep 2019 at 15:01 PDT (2,113 days ago) in Virgo

16.

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. Mon, 30 Sep 2019 at 21:12 PDT (2,112 days ago) in Libra

17.

The Andromeda Galaxy is well placed The Andromeda Galaxy M31 (mag 3.4) culminates at around midnight local time. Wed, 02 Oct 2019 (2,110 days ago) in Andromeda

18.

Mercury at aphelion Mercury passes the furthest point along its orbit from the Sun. Wed, 02 Oct 2019 at 23:18 PDT (2,110 days ago) in Virgo

19.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 1°52'. Thu, 03 Oct 2019 at 13:22 PDT (2,109 days ago) in Ophiuchus

20.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Thu, 03 Oct 2019 at 13:56 PDT (2,109 days ago) in Ophiuchus