521.

Uranus enters retrograde motion Uranus reverses its direction of motion across the sky. Thu, 25 May 2000 at 04:19 EDT (8,802 days ago) in Capricornus

522.

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. Wed, 10 May 2000 at 15:35 EDT (8,817 days ago) in Aries

523.

Jupiter at apogee Jupiter reaches its furthest point from the Earth, as it passes around the far side of the Sun. Wed, 10 May 2000 at 03:40 EDT (8,817 days ago) in Aries

524.

Neptune enters retrograde motion Neptune reverses its direction of motion across the sky. Mon, 08 May 2000 at 07:05 EDT (8,819 days ago) in Capricornus

525.

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. Sun, 07 May 2000 at 23:57 EDT (8,820 days ago) in Aries

526.

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. Sun, 06 Feb 2000 at 02:05 EDT (8,911 days ago) in Capricornus

527.

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. Mon, 24 Jan 2000 at 12:59 EDT (8,924 days ago) in Capricornus

528.

Saturn ends retrograde motion Saturn returns to its usual eastward motion after opposition. Tue, 11 Jan 2000 at 23:45 EDT (8,936 days ago) in Aries

529.

Jupiter ends retrograde motion Jupiter returns to its usual eastward motion after opposition. Mon, 20 Dec 1999 at 09:58 EDT (8,959 days ago) in Pisces

530.

Mars at perihelion Mars passes its orbit's closest point to the Sun. Thu, 25 Nov 1999 at 09:15 EDT (8,984 days ago) in Capricornus

531.

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. Sat, 06 Nov 1999 at 08:44 EDT (9,003 days ago) in Aries

532.

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. Sat, 23 Oct 1999 at 14:56 EDT (9,017 days ago) in Pisces

533.

Uranus ends retrograde motion Uranus returns to its usual eastward motion after opposition. Sat, 23 Oct 1999 at 01:11 EDT (9,017 days ago) in Capricornus

534.

Jupiter at perigee Jupiter reaches its closest point to the Earth – marking the best time to observe it in 1970. Fri, 22 Oct 1999 at 10:06 EDT (9,018 days ago) in Pisces

535.

Neptune ends retrograde motion Neptune returns to its usual eastward motion after opposition. Wed, 13 Oct 1999 at 21:34 EDT (9,027 days ago) in Capricornus

536.

Saturn enters retrograde motion Saturn reverses its direction of motion across the sky. Sun, 29 Aug 1999 at 21:51 EDT (9,072 days ago) in Aries

537.

Jupiter enters retrograde motion Jupiter reverses its direction of motion across the sky. Tue, 24 Aug 1999 at 22:38 EDT (9,077 days ago) in Aries

538.

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, 07 Aug 1999 at 14:29 EDT (9,094 days ago) in Capricornus

539.

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. Mon, 26 Jul 1999 at 05:23 EDT (9,106 days ago) in Capricornus

540.

Mars ends retrograde motion Mars returns to its usual eastward motion after opposition. Fri, 04 Jun 1999 at 02:11 EDT (9,158 days ago) in Virgo