Mercury retrograde dates in 1977
Mercury turns retrograde 3 times in 1977 and is already retrograde on 1 January.
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 1977
Turns direct
Monday 17 January 1977, 10:01
Capricorn 7°
Turns retrograde
Wednesday 20 April 1977, 05:05
Taurus 14°
Turns direct
Friday 13 May 1977, 23:55
Taurus 4°
Turns retrograde
Monday 22 August 1977, 17:19
Virgo 20°
Turns direct
Wednesday 14 September 1977, 18:02
Virgo 6°
Turns retrograde
Monday 12 December 1977, 04:10
Capricorn 7°
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.