421.

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 (8,834 days ago) in Aries

422.

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 (8,834 days ago) in Aries

423.

Neptune enters retrograde motion Neptune reverses its direction of motion across the sky. Mon, 08 May 2000 at 07:05 EDT (8,836 days ago) in Capricornus

424.

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 (8,837 days ago) in Aries

425.

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 (8,928 days ago) in Capricornus

426.

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 (8,941 days ago) in Capricornus

427.

Saturn ends retrograde motion Saturn returns to its usual eastward motion after opposition. Tue, 11 Jan 2000 at 23:45 EDT (8,953 days ago) in Aries

428.

Jupiter ends retrograde motion Jupiter returns to its usual eastward motion after opposition. Mon, 20 Dec 1999 at 09:58 EDT (8,976 days ago) in Pisces

429.

Mars at perihelion Mars passes its orbit's closest point to the Sun. Thu, 25 Nov 1999 at 09:15 EDT (9,001 days ago) in Capricornus

430.

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 (9,020 days ago) in Aries

431.

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 (9,034 days ago) in Pisces

432.

Uranus ends retrograde motion Uranus returns to its usual eastward motion after opposition. Sat, 23 Oct 1999 at 01:11 EDT (9,034 days ago) in Capricornus

433.

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 (9,035 days ago) in Pisces

434.

Neptune ends retrograde motion Neptune returns to its usual eastward motion after opposition. Wed, 13 Oct 1999 at 21:34 EDT (9,044 days ago) in Capricornus

435.

Saturn enters retrograde motion Saturn reverses its direction of motion across the sky. Sun, 29 Aug 1999 at 21:51 EDT (9,089 days ago) in Aries

436.

Jupiter enters retrograde motion Jupiter reverses its direction of motion across the sky. Tue, 24 Aug 1999 at 22:38 EDT (9,094 days ago) in Aries

437.

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 (9,111 days ago) in Capricornus

438.

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 (9,123 days ago) in Capricornus

439.

Mars ends retrograde motion Mars returns to its usual eastward motion after opposition. Fri, 04 Jun 1999 at 02:11 EDT (9,175 days ago) in Virgo

440.

Uranus enters retrograde motion Uranus reverses its direction of motion across the sky. Fri, 21 May 1999 at 18:31 EDT (9,189 days ago) in Capricornus