Retrograde dates for 1900
These are the exact dates every planet from Mercury to Pluto turns retrograde and turns direct in 1900, in Universal Time. Mercury is retrograde from 15 March 1900 to 7 April 1900, and from 18 July 1900 to 11 August 1900, and from 9 November 1900 to 29 November 1900.
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- Mercury retrograde15 March to 7 April, 18 July to 11 August, 9 November to 29 November
- Venus retrograde16 June to 30 July
- Mars retrogradenone
- Jupiter retrograde27 March to 29 July
- Saturn retrograde14 April to 2 September
- Uranus retrograde17 March to 17 August
Mercury retrograde in 1900
Mercury is retrograde in 3 periods touching 1900.
- Thursday 15 March 190013:22 UTMercury turns retrograde at 9°09′ Aries
- Saturday 7 April 190018:41 UTMercury turns direct at 26°31′ Pisces
- Wednesday 18 July 190012:56 UTMercury turns retrograde at 15°15′ Leo
- Saturday 11 August 190014:56 UTMercury turns direct at 3°48′ Leo
- Friday 9 November 190023:29 UTMercury turns retrograde at 6°17′ Sagittarius
- Thursday 29 November 190021:29 UTMercury turns direct at 20°06′ Scorpio
Venus retrograde in 1900
Venus is retrograde in 1 period touching 1900.
- Saturday 16 June 190023:01 UTVenus turns retrograde at 23°59′ Cancer
- Monday 30 July 190002:37 UTVenus turns direct at 7°29′ Cancer
Mars retrograde in 1900
Mars does not turn retrograde or direct in 1900.
Jupiter retrograde in 1900
Jupiter is retrograde in 1 period touching 1900.
- Tuesday 27 March 190021:16 UTJupiter turns retrograde at 10°52′ Sagittarius
- Sunday 29 July 190002:20 UTJupiter turns direct at 1°00′ Sagittarius
Saturn retrograde in 1900
Saturn is retrograde in 1 period touching 1900.
- Saturday 14 April 190006:56 UTSaturn turns retrograde at 5°02′ Capricorn
- Sunday 2 September 190015:11 UTSaturn turns direct at 28°25′ Sagittarius
Uranus retrograde in 1900
Uranus is retrograde in 1 period touching 1900.
- Saturday 17 March 190019:25 UTUranus turns retrograde at 12°28′ Sagittarius
- Friday 17 August 190018:37 UTUranus turns direct at 8°27′ Sagittarius
Neptune retrograde in 1900
Neptune is retrograde in 2 periods touching 1900.
- Before 1900Neptune turned retrograde on 30 September 1899 and is still retrograde on 1 January 1900
- Monday 5 March 190017:30 UTNeptune turns direct at 24°12′ Gemini
- Tuesday 2 October 190017:40 UTNeptune turns retrograde at 29°15′ Gemini
- After 1900Neptune turns direct on 8 March 1901 and is still retrograde on 31 December 1900
Pluto retrograde in 1900
Pluto is retrograde in 2 periods touching 1900.
- Before 1900Pluto turned retrograde on 16 September 1899 and is still retrograde on 1 January 1900
- Tuesday 27 February 190007:03 UTPluto turns direct at 14°41′ Gemini
- Monday 17 September 190013:01 UTPluto turns retrograde at 17°42′ Gemini
- After 1900Pluto turns direct on 28 February 1901 and is still retrograde on 31 December 1900
What “retrograde” means here
A planet is retrograde when its ecliptic longitude, seen from the Earth, is decreasing: it appears to move backwards against the stars. A station is the moment it appears to stop before changing direction. The Sun and the Moon never turn retrograde. Each date above is a station computed to the minute.
What these dates are worth
Every time on this page is computed by the engine that casts the charts, not copied from a table. All times are Universal Time (UT), so a date can fall a day either side of your own clock: add your time zone's offset to get local time. The Moon is checked against NASA and JPL values and the planets against published station and ingress dates; the table of what Umbriel checks, and how close it comes is public. Umbriel is for reflection and self-understanding, not prediction.
Moon phases 1900 · Ephemeris 1900 · Retrograde calendar · Sky events ahead