421.

Neptune ends retrograde motion Neptune returns to its usual eastward motion after opposition. Wed, 22 Oct 2003 at 20:22 EDT (7,529 days ago) in Capricornus

422.

Mars ends retrograde motion Mars returns to its usual eastward motion after opposition. Sat, 27 Sep 2003 at 03:48 EDT (7,554 days ago) in Aquarius

423.

Mars at perihelion Mars passes its orbit's closest point to the Sun. Sat, 30 Aug 2003 at 06:10 EDT (7,582 days ago) in Aquarius

424.

Mars at opposition Mars lies in the opposite direction to the Sun in the sky, making it closer, brighter and larger than at other times. It is also optimally positioned to be observable for much of the night. Thu, 28 Aug 2003 at 13:52 EDT (7,584 days ago) in Aquarius

425.

Mars at perigee Mars reaches its closest point to the Earth – marking the best time to observe it in 1970. Wed, 27 Aug 2003 at 05:46 EDT (7,585 days ago) in Aquarius

426.

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. Sun, 24 Aug 2003 at 05:54 EDT (7,588 days ago) in Aquarius

427.

Jupiter at apogee Jupiter reaches its furthest point from the Earth, as it passes around the far side of the Sun. Fri, 22 Aug 2003 at 13:35 EDT (7,590 days ago) in Leo

428.

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, 22 Aug 2003 at 05:56 EDT (7,590 days ago) in Leo

429.

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 (7,608 days ago) in Capricornus

430.

Mars enters retrograde motion Mars reverses its direction of motion across the sky. Tue, 29 Jul 2003 at 03:34 EDT (7,614 days ago) in Aquarius

431.

Saturn at perihelion Saturn passes its orbit's closest point to the Sun. Sun, 20 Jul 2003 at 21:57 EDT (7,623 days ago) in Gemini

432.

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 (7,649 days ago) in Gemini

433.

Uranus enters retrograde motion Uranus reverses its direction of motion across the sky. Sat, 07 Jun 2003 at 03:13 EDT (7,666 days ago) in Aquarius

434.

Neptune enters retrograde motion Neptune reverses its direction of motion across the sky. Thu, 15 May 2003 at 19:54 EDT (7,689 days ago) in Capricornus

435.

Jupiter ends retrograde motion Jupiter returns to its usual eastward motion after opposition. Thu, 03 Apr 2003 at 21:53 EDT (7,731 days ago) in Cancer

436.

Saturn ends retrograde motion Saturn returns to its usual eastward motion after opposition. Sat, 22 Feb 2003 at 02:35 EDT (7,771 days ago) in Taurus

437.

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 (7,776 days ago) in Aquarius

438.

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 (7,791 days ago) in Cancer

439.

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 (7,792 days ago) in Cancer

440.

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 (7,794 days ago) in Capricornus