Mercury Retrograde 2027: Every Retrograde Window
The dates come from real ephemeris data and are given in UTC.
MERCURY · 2027
Mercury goes retrograde 3 times in 2027
There are 7 retrograde periods in 2027. The table and the year track below give the pre-shadow, retrograde and post-shadow dates of each one.
| Planet | Pre-shadow | Retrograde | Post-shadow | Sign | Year track |
|---|---|---|---|---|---|
| Mars | November 5, 2026 | January 10, 2027 – April 1, 2027 | June 8, 2027 | Virgo | January 10, 2027 – April 1, 2027 |
| Mercury | January 25, 2027 | February 9, 2027 – March 3, 2027 | March 23, 2027 | Pisces | February 9, 2027 – March 3, 2027 |
| Pluto | January 13, 2027 | May 8, 2027 – October 18, 2027 | February 9, 2028 | Aquarius | May 8, 2027 – October 18, 2027 |
| Mercury | May 26, 2027 | June 10, 2027 – July 4, 2027 | July 19, 2027 | Cancer | June 10, 2027 – July 4, 2027 |
| Neptune | March 18, 2027 | July 9, 2027 – December 15, 2027 | April 4, 2028 | Aries | July 9, 2027 – December 15, 2027 |
| Saturn | May 4, 2027 | August 9, 2027 – December 24, 2027 | March 27, 2028 | Aries | August 9, 2027 – December 24, 2027 |
| Mercury | September 17, 2027 | October 7, 2027 – October 28, 2027 | November 13, 2027 | Scorpio | October 7, 2027 – October 28, 2027 |
RETROGRADE WINDOWSHADOW PERIODTHE TRACK SPANS 2027
SHADOW
WHAT ARE THE SHADOW PERIODS?
Before a planet turns retrograde it passes, for the first time, over the degrees it will later walk back: that stretch is the pre-shadow. After the retrograde ends it crosses those same degrees a third time, and that stretch is the post-shadow. This is why the effect begins and ends gradually rather than all at once — and why the calendar keeps the three columns apart.