301.

Jupiter enters retrograde motion Jupiter reverses its direction of motion across the sky. Fri, 23 Jul 2010 at 07:49 EDT (5,109 days ago) in Pisces

302.

Uranus enters retrograde motion Uranus reverses its direction of motion across the sky. Mon, 05 Jul 2010 at 12:57 EDT (5,127 days ago) in Pisces

303.

Neptune enters retrograde motion Neptune reverses its direction of motion across the sky. Mon, 31 May 2010 at 13:52 EDT (5,162 days ago) in Aquarius

304.

Saturn ends retrograde motion Saturn returns to its usual eastward motion after opposition. Sun, 30 May 2010 at 14:34 EDT (5,163 days ago) in Virgo

305.

Mars at aphelion Mars passes the furthest point along its orbit from the Sun. Tue, 30 Mar 2010 at 18:23 EDT (5,224 days ago) in Cancer

306.

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. Sun, 21 Mar 2010 at 20:29 EDT (5,233 days ago) in Virgo

307.

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. Wed, 17 Mar 2010 at 02:40 EDT (5,237 days ago) in Pisces

308.

Mars ends retrograde motion Mars returns to its usual eastward motion after opposition. Wed, 10 Mar 2010 at 12:08 EDT (5,244 days ago) in Cancer

309.

Jupiter at apogee Jupiter reaches its furthest point from the Earth, as it passes around the far side of the Sun. Sun, 28 Feb 2010 at 08:55 EDT (5,254 days ago) in Aquarius

310.

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, 28 Feb 2010 at 05:33 EDT (5,254 days ago) in Aquarius

311.

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. Sun, 14 Feb 2010 at 18:10 EDT (5,268 days ago) in Capricornus

312.

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. Fri, 29 Jan 2010 at 14:37 EDT (5,284 days ago) in Cancer

313.

Mars at perigee Mars reaches its closest point to the Earth – marking the best time to observe it in 1970. Wed, 27 Jan 2010 at 13:55 EDT (5,286 days ago) in Cancer

314.

Saturn enters retrograde motion Saturn reverses its direction of motion across the sky. Wed, 13 Jan 2010 at 10:29 EDT (5,300 days ago) in Virgo

315.

Mars enters retrograde motion Mars reverses its direction of motion across the sky. Sun, 20 Dec 2009 at 08:25 EDT (5,324 days ago) in Leo

316.

Uranus ends retrograde motion Uranus returns to its usual eastward motion after opposition. Tue, 01 Dec 2009 at 16:36 EDT (5,343 days ago) in Aquarius

317.

Neptune ends retrograde motion Neptune returns to its usual eastward motion after opposition. Wed, 04 Nov 2009 at 14:31 EDT (5,370 days ago) in Capricornus

318.

Jupiter ends retrograde motion Jupiter returns to its usual eastward motion after opposition. Tue, 13 Oct 2009 at 00:31 EDT (5,392 days ago) in Capricornus

319.

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, 17 Sep 2009 at 14:12 EDT (5,418 days ago) in Virgo

320.

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. Thu, 17 Sep 2009 at 05:33 EDT (5,418 days ago) in Pisces