421.

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, 04 Aug 2003 at 09:46 EDT (7,598 days ago) in Capricornus

422.

Mars enters retrograde motion Mars reverses its direction of motion across the sky. Tue, 29 Jul 2003 at 03:34 EDT (7,604 days ago) in Aquarius

423.

Saturn at perihelion Saturn passes its orbit's closest point to the Sun. Sun, 20 Jul 2003 at 21:57 EDT (7,613 days ago) in Gemini

424.

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. Tue, 24 Jun 2003 at 09:29 EDT (7,639 days ago) in Gemini

425.

Uranus enters retrograde motion Uranus reverses its direction of motion across the sky. Sat, 07 Jun 2003 at 03:13 EDT (7,656 days ago) in Aquarius

426.

Neptune enters retrograde motion Neptune reverses its direction of motion across the sky. Thu, 15 May 2003 at 19:54 EDT (7,679 days ago) in Capricornus

427.

Jupiter ends retrograde motion Jupiter returns to its usual eastward motion after opposition. Thu, 03 Apr 2003 at 21:53 EDT (7,721 days ago) in Cancer

428.

Saturn ends retrograde motion Saturn returns to its usual eastward motion after opposition. Sat, 22 Feb 2003 at 02:35 EDT (7,761 days ago) in Taurus

429.

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, 17 Feb 2003 at 16:28 EDT (7,766 days ago) in Aquarius

430.

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. Sun, 02 Feb 2003 at 04:04 EDT (7,781 days ago) in Cancer

431.

Jupiter at perigee Jupiter reaches its closest point to the Earth – marking the best time to observe it in 1970. Sat, 01 Feb 2003 at 14:10 EDT (7,782 days ago) in Cancer

432.

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, 30 Jan 2003 at 18:25 EDT (7,784 days ago) in Capricornus

433.

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, 17 Dec 2002 at 12:20 EDT (7,828 days ago) in Taurus

434.

Jupiter enters retrograde motion Jupiter reverses its direction of motion across the sky. Wed, 04 Dec 2002 at 07:01 EDT (7,841 days ago) in Leo

435.

Uranus ends retrograde motion Uranus returns to its usual eastward motion after opposition. Mon, 04 Nov 2002 at 01:04 EDT (7,871 days ago) in Capricornus

436.

Neptune ends retrograde motion Neptune returns to its usual eastward motion after opposition. Sun, 20 Oct 2002 at 08:27 EDT (7,886 days ago) in Capricornus

437.

Saturn enters retrograde motion Saturn reverses its direction of motion across the sky. Fri, 11 Oct 2002 at 08:41 EDT (7,895 days ago) in Orion

438.

Mars at aphelion Mars passes the furthest point along its orbit from the Sun. Fri, 20 Sep 2002 at 22:48 EDT (7,916 days ago) in Leo

439.

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, 19 Aug 2002 at 20:45 EDT (7,948 days ago) in Capricornus

440.

Mars at apogee Mars reaches its furthest point from the Earth, as it passes around the far side of the Sun. Wed, 14 Aug 2002 at 07:48 EDT (7,953 days ago) in Leo