1.

Neptune at solar conjunction Neptune is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Wed, 06 Mar 2019 at 19:51 EDT (1,878 days ago) in Aquarius

2.

Jupiter enters retrograde motion Jupiter reverses its direction of motion across the sky. Wed, 10 Apr 2019 at 12:52 EDT (1,843 days ago) in Ophiuchus

3.

Uranus at solar conjunction Uranus 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, 22 Apr 2019 at 18:57 EDT (1,831 days ago) in Aries

4.

Saturn enters retrograde motion Saturn reverses its direction of motion across the sky. Mon, 29 Apr 2019 at 21:16 EDT (1,824 days ago) in Sagittarius

5.

Jupiter at opposition Jupiter lies in the opposite direction to the Sun in the sky, making it slightly closer, brighter and larger than at other times. It is also optimally positioned to be observable for much of the night. Mon, 10 Jun 2019 at 11:20 EDT (1,782 days ago) in Ophiuchus

6.

Jupiter at perigee Jupiter reaches its closest point to the Earth – marking the best time to observe it in 1970. Tue, 11 Jun 2019 at 23:03 EDT (1,781 days ago) in Ophiuchus

7.

Neptune enters retrograde motion Neptune reverses its direction of motion across the sky. Fri, 21 Jun 2019 at 10:13 EDT (1,771 days ago) in Aquarius

8.

Saturn at opposition Saturn lies in the opposite direction to the Sun in the sky, making it slightly closer, brighter and larger than at other times. It is also optimally positioned to be observable for much of the night. Tue, 09 Jul 2019 at 12:59 EDT (1,753 days ago) in Sagittarius

9.

Jupiter ends retrograde motion Jupiter returns to its usual eastward motion after opposition. Sun, 11 Aug 2019 at 09:47 EDT (1,720 days ago) in Ophiuchus

10.

Uranus enters retrograde motion Uranus reverses its direction of motion across the sky. Sun, 11 Aug 2019 at 21:53 EDT (1,720 days ago) in Aries

11.

Mars at aphelion Mars passes the furthest point along its orbit from the Sun. Sun, 25 Aug 2019 at 23:48 EDT (1,706 days ago) in Leo

12.

Mars at apogee Mars reaches its furthest point from the Earth, as it passes around the far side of the Sun. Wed, 28 Aug 2019 at 15:20 EDT (1,703 days ago) in Leo

13.

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 (1,698 days ago) in Leo

14.

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 (1,690 days ago) in Aquarius

15.

Saturn ends retrograde motion Saturn returns to its usual eastward motion after opposition. Wed, 18 Sep 2019 at 04:25 EDT (1,682 days ago) in Sagittarius

16.

Uranus at opposition Uranus lies in the opposite direction to the Sun in the sky, making it optimally positioned to be observable for much of the night. Mon, 28 Oct 2019 at 04:07 EDT (1,642 days ago) in Aries

17.

Neptune ends retrograde motion Neptune returns to its usual eastward motion after opposition. Wed, 27 Nov 2019 at 08:58 EDT (1,612 days ago) in Aquarius

18.

Jupiter at apogee Jupiter reaches its furthest point from the Earth, as it passes around the far side of the Sun. Wed, 25 Dec 2019 at 16:56 EDT (1,584 days ago) in Sagittarius

19.

Jupiter at solar conjunction Jupiter is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Fri, 27 Dec 2019 at 13:14 EDT (1,582 days ago) in Sagittarius

20.

Uranus ends retrograde motion Uranus returns to its usual eastward motion after opposition. Fri, 10 Jan 2020 at 21:53 EDT (1,568 days ago) in Aries