421.

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, 03 Feb 2005 at 14:20 EDT (7,087 days ago) in Capricornus

422.

Jupiter enters retrograde motion Jupiter reverses its direction of motion across the sky. Tue, 01 Feb 2005 at 21:26 EDT (7,089 days ago) in Virgo

423.

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. Thu, 13 Jan 2005 at 17:58 EDT (7,108 days ago) in Gemini

424.

Uranus ends retrograde motion Uranus returns to its usual eastward motion after opposition. Thu, 11 Nov 2004 at 14:10 EDT (7,171 days ago) in Aquarius

425.

Saturn enters retrograde motion Saturn reverses its direction of motion across the sky. Mon, 08 Nov 2004 at 02:14 EDT (7,174 days ago) in Gemini

426.

Neptune ends retrograde motion Neptune returns to its usual eastward motion after opposition. Sun, 24 Oct 2004 at 06:35 EDT (7,189 days ago) in Capricornus

427.

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, 21 Sep 2004 at 19:36 EDT (7,222 days ago) in Virgo

428.

Jupiter at apogee Jupiter reaches its furthest point from the Earth, as it passes around the far side of the Sun. Mon, 20 Sep 2004 at 22:33 EDT (7,223 days ago) in Virgo

429.

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. Wed, 15 Sep 2004 at 08:30 EDT (7,228 days ago) in Leo

430.

Mars at apogee Mars reaches its furthest point from the Earth, as it passes around the far side of the Sun. Sun, 05 Sep 2004 at 15:18 EDT (7,238 days ago) in Leo

431.

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. Fri, 27 Aug 2004 at 14:32 EDT (7,247 days ago) in Aquarius

432.

Mars at aphelion Mars passes the furthest point along its orbit from the Sun. Sat, 07 Aug 2004 at 21:45 EDT (7,267 days ago) in Leo

433.

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. Thu, 05 Aug 2004 at 22:59 EDT (7,269 days ago) in Capricornus

434.

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. Thu, 08 Jul 2004 at 12:28 EDT (7,297 days ago) in Gemini

435.

Uranus enters retrograde motion Uranus reverses its direction of motion across the sky. Thu, 10 Jun 2004 at 12:20 EDT (7,325 days ago) in Aquarius

436.

Neptune enters retrograde motion Neptune reverses its direction of motion across the sky. Mon, 17 May 2004 at 08:27 EDT (7,349 days ago) in Capricornus

437.

Jupiter ends retrograde motion Jupiter returns to its usual eastward motion after opposition. Tue, 04 May 2004 at 23:11 EDT (7,362 days ago) in Leo

438.

Saturn ends retrograde motion Saturn returns to its usual eastward motion after opposition. Sun, 07 Mar 2004 at 11:19 EDT (7,420 days ago) in Gemini

439.

Jupiter at perigee Jupiter reaches its closest point to the Earth – marking the best time to observe it in 1970. Thu, 04 Mar 2004 at 04:17 EDT (7,423 days ago) in Leo

440.

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. Wed, 03 Mar 2004 at 23:57 EDT (7,423 days ago) in Leo