1721.

Uranus enters retrograde motion Uranus reverses its direction of motion across the sky. Sat, 31 Jul 2100 at 04:53 EDT (27,860 days away) in Pisces

1722.

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. Thu, 09 Sep 2100 at 11:23 EDT (27,900 days away) in Leo

1723.

Mars at apogee Mars reaches its furthest point from the Earth, as it passes around the far side of the Sun. Wed, 22 Sep 2100 at 23:57 EDT (27,913 days away) in Virgo

1724.

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, 11 Oct 2100 at 02:29 EDT (27,932 days away) in Virgo

1725.

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. Sat, 16 Oct 2100 at 19:06 EDT (27,937 days away) in Pisces

1726.

Saturn at solar conjunction Saturn 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, 22 Oct 2100 at 16:34 EDT (27,943 days away) in Virgo

1727.

Jupiter at apogee Jupiter reaches its furthest point from the Earth, as it passes around the far side of the Sun. Mon, 25 Oct 2100 at 02:10 EDT (27,946 days away) in Virgo

1728.

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. Tue, 26 Oct 2100 at 19:14 EDT (27,947 days away) in Virgo

1729.

Neptune enters retrograde motion Neptune reverses its direction of motion across the sky. Tue, 21 Dec 2100 at 11:25 EDT (28,003 days away) in Leo

1730.

Uranus ends retrograde motion Uranus returns to its usual eastward motion after opposition. Thu, 30 Dec 2100 at 18:03 EDT (28,012 days away) in Pisces

1731.

Saturn enters retrograde motion Saturn reverses its direction of motion across the sky. Wed, 16 Feb 2101 at 04:12 EDT (28,060 days away) in Libra

1732.

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, 08 Mar 2101 at 16:56 EDT (28,080 days away) in Leo

1733.

Jupiter enters retrograde motion Jupiter reverses its direction of motion across the sky. Wed, 09 Mar 2101 at 03:29 EDT (28,081 days away) in Libra

1734.

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. Fri, 15 Apr 2101 at 14:06 EDT (28,118 days away) in Pisces

1735.

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. Mon, 25 Apr 2101 at 15:17 EDT (28,128 days away) in Virgo

1736.

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, 09 May 2101 at 00:48 EDT (28,142 days away) in Libra

1737.

Jupiter at perigee Jupiter reaches its closest point to the Earth – marking the best time to observe it in 1970. Tue, 10 May 2101 at 10:26 EDT (28,143 days away) in Libra

1738.

Neptune ends retrograde motion Neptune returns to its usual eastward motion after opposition. Sat, 28 May 2101 at 02:09 EDT (28,161 days away) in Leo

1739.

Mars at perihelion Mars passes its orbit's closest point to the Sun. Tue, 21 Jun 2101 at 06:57 EDT (28,185 days away) in Pisces

1740.

Saturn ends retrograde motion Saturn returns to its usual eastward motion after opposition. Tue, 05 Jul 2101 at 08:48 EDT (28,199 days away) in Virgo