321.

Saturn ring plane crossing Saturn's seasons are changing, making its rings appear edge-on from the Earth. Fri, 04 Sep 2009 at 07:40 EDT (5,431 days ago) in Virgo

322.

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, 17 Aug 2009 at 16:46 EDT (5,449 days ago) in Capricornus

323.

Jupiter at perigee Jupiter reaches its closest point to the Earth – marking the best time to observe it in 1970. Fri, 14 Aug 2009 at 23:13 EDT (5,452 days ago) in Capricornus

324.

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. Fri, 14 Aug 2009 at 13:45 EDT (5,452 days ago) in Capricornus

325.

Equinox on Saturn Saturn's seasons are changing, making its rings appear edge-on from the Earth. Mon, 10 Aug 2009 at 14:00 EDT (5,456 days ago) in Leo

326.

Uranus enters retrograde motion Uranus reverses its direction of motion across the sky. Wed, 01 Jul 2009 at 03:34 EDT (5,496 days ago) in Pisces

327.

Jupiter enters retrograde motion Jupiter reverses its direction of motion across the sky. Mon, 15 Jun 2009 at 03:57 EDT (5,512 days ago) in Capricornus

328.

Neptune enters retrograde motion Neptune reverses its direction of motion across the sky. Thu, 28 May 2009 at 23:55 EDT (5,530 days ago) in Capricornus

329.

Saturn ends retrograde motion Saturn returns to its usual eastward motion after opposition. Sat, 16 May 2009 at 21:59 EDT (5,542 days ago) in Leo

330.

Mars at perihelion Mars passes its orbit's closest point to the Sun. Tue, 21 Apr 2009 at 05:49 EDT (5,567 days ago) in Pisces

331.

Uranus at aphelion Uranus passes the furthest point along its orbit from the Sun. Thu, 02 Apr 2009 at 13:56 EDT (5,586 days ago) in Pisces

332.

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. Thu, 12 Mar 2009 at 21:18 EDT (5,607 days ago) in Aquarius

333.

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, 08 Mar 2009 at 15:45 EDT (5,611 days ago) in Leo

334.

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, 12 Feb 2009 at 07:32 EDT (5,635 days ago) in Capricornus

335.

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. Sat, 24 Jan 2009 at 00:33 EDT (5,654 days ago) in Capricornus

336.

Jupiter at apogee Jupiter reaches its furthest point from the Earth, as it passes around the far side of the Sun. Thu, 22 Jan 2009 at 21:42 EDT (5,656 days ago) in Capricornus

337.

Saturn enters retrograde motion Saturn reverses its direction of motion across the sky. Wed, 31 Dec 2008 at 13:08 EDT (5,678 days ago) in Leo

338.

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. Fri, 05 Dec 2008 at 16:34 EDT (5,704 days ago) in Ophiuchus

339.

Uranus ends retrograde motion Uranus returns to its usual eastward motion after opposition. Thu, 27 Nov 2008 at 11:54 EDT (5,712 days ago) in Aquarius

340.

Neptune ends retrograde motion Neptune returns to its usual eastward motion after opposition. Sun, 02 Nov 2008 at 02:40 EDT (5,737 days ago) in Capricornus