Mercury retrograde dates in 1900
Mercury turns retrograde 3 times in 1900.
Mercury is the fastest planet and turns retrograde more often than any other, about three times a year. Each retrograde lasts between 20 and 24 days, and the start of one comes 108 to 125 days after the start of the last.
Mercury stays near the Sun in the sky, and its retrograde happens when it passes between the Earth and the Sun. In tradition Mercury stands for thinking, speech and travel, and astrologers who follow retrogrades read a Mercury retrograde as a time to revisit them. That is a tradition of interpretation, not a measured effect.
Stations in 1900
Turns retrograde
Thursday 15 March 1900, 15:40
Aries 9°
Turns direct
Saturday 7 April 1900, 21:01
Pisces 26°
Turns retrograde
Wednesday 18 July 1900, 15:03
Leo 15°
Turns direct
Saturday 11 August 1900, 17:28
Leo 3°
Turns retrograde
Saturday 10 November 1900, 01:49
Sagittarius 6°
Turns direct
Thursday 29 November 1900, 23:46
Scorpio 20°
Stations are found by Astrely's own code from the planets' positions and are shown in Nicosia time. Mercury's stations are checked against NASA/JPL Horizons to within four minutes; the outer planets move so slowly around a station that their times are best read to the day. The method page has the details.
Astrology is a tradition of interpretation. What is written here is traditional, offered for reflection and entertainment, not advice and not a prediction.