Mercury retrograde dates in 2100
Mercury turns retrograde 3 times in 2100.
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 2100
Turns retrograde
Saturday 30 January 2100, 08:32
Aquarius 25°
Turns direct
Saturday 20 February 2100, 15:43
Aquarius 10°
Turns retrograde
Saturday 29 May 2100, 08:00
Gemini 23°
Turns direct
Tuesday 22 June 2100, 07:10
Gemini 15°
Turns retrograde
Sunday 26 September 2100, 21:09
Libra 24°
Turns direct
Monday 18 October 2100, 09:15
Libra 9°
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.