541.

Uranus enters retrograde motion Uranus reverses its direction of motion across the sky. Fri, 21 May 1999 at 18:31 EDT (9,190 days ago) in Capricornus

542.

Jupiter at perihelion Jupiter passes its orbit's closest point to the Sun. Wed, 19 May 1999 at 15:30 EDT (9,192 days ago) in Pisces

543.

Neptune enters retrograde motion Neptune reverses its direction of motion across the sky. Thu, 06 May 1999 at 20:21 EDT (9,205 days ago) in Capricornus

544.

Mars at perigee Mars reaches its closest point to the Earth – marking the best time to observe it in 1970. Sat, 01 May 1999 at 13:21 EDT (9,210 days ago) in Virgo

545.

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, 27 Apr 1999 at 06:54 EDT (9,214 days ago) in Aries

546.

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. Sat, 24 Apr 1999 at 13:31 EDT (9,217 days ago) in Virgo

547.

Jupiter at apogee Jupiter reaches its furthest point from the Earth, as it passes around the far side of the Sun. Fri, 02 Apr 1999 at 08:02 EDT (9,239 days ago) in Pisces

548.

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. Thu, 01 Apr 1999 at 00:59 EDT (9,240 days ago) in Pisces

549.

Mars enters retrograde motion Mars reverses its direction of motion across the sky. Thu, 18 Mar 1999 at 08:45 EDT (9,254 days ago) in Libra

550.

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, 01 Feb 1999 at 20:49 EDT (9,299 days ago) in Capricornus

551.

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. Fri, 22 Jan 1999 at 03:13 EDT (9,309 days ago) in Capricornus

552.

Saturn ends retrograde motion Saturn returns to its usual eastward motion after opposition. Tue, 29 Dec 1998 at 10:56 EDT (9,333 days ago) in Pisces

553.

Mars at aphelion Mars passes the furthest point along its orbit from the Sun. Wed, 16 Dec 1998 at 15:32 EDT (9,346 days ago) in Virgo

554.

Jupiter ends retrograde motion Jupiter returns to its usual eastward motion after opposition. Fri, 13 Nov 1998 at 07:52 EDT (9,379 days ago) in Aquarius

555.

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. Fri, 23 Oct 1998 at 14:41 EDT (9,400 days ago) in Pisces

556.

Uranus ends retrograde motion Uranus returns to its usual eastward motion after opposition. Sun, 18 Oct 1998 at 16:23 EDT (9,405 days ago) in Capricornus

557.

Neptune ends retrograde motion Neptune returns to its usual eastward motion after opposition. Sun, 11 Oct 1998 at 10:39 EDT (9,412 days ago) in Sagittarius

558.

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. Tue, 15 Sep 1998 at 22:54 EDT (9,438 days ago) in Aquarius

559.

Jupiter at perigee Jupiter reaches its closest point to the Earth – marking the best time to observe it in 1970. Tue, 15 Sep 1998 at 12:57 EDT (9,438 days ago) in Aquarius

560.

Saturn enters retrograde motion Saturn reverses its direction of motion across the sky. Sat, 15 Aug 1998 at 15:00 EDT (9,469 days ago) in Cetus