Astrology CalendarMercury Retrograde 2027: The Exact Dates
Three windows in 2027, with stations to the minute and the degrees each one covers. Computed from an ephemeris, not copied, and dated so you can tell.
Retrogrades
Mercury Retrograde: Real Dates and the Evidence
Mercury goes retrograde three or four times a year, for about three weeks, read as a review of communication, travel, paperwork and anything with a send button. The computed dates, what retrograde motion physically is, and an honest account of the evidence.
The short answerMercury goes retrograde three or four times a year, for about three weeks, and the period is read as a review of communication, travel, paperwork and anything with a send button. The next one runs February 9, 2027 to March 3, 2027. Mercury is retrograde about 19 per cent of the time, so roughly one person in five is born with it retrograde.
Mercury retrograde dates
Computed from the ephemeris: these are the moments Mercury's apparent motion changes direction, which is the actual definition of a station rather than an approximation of one.
| Retrograde from | Direct on | Length | Degrees covered |
|---|---|---|---|
| February 9, 2027 | March 3, 2027 | 22 days | 5°59' Pisces back to 20°55' Aquarius |
| June 10, 2027 | July 4, 2027 | 24 days | 6°22' Cancer back to 27°28' Gemini |
| October 7, 2027 | October 28, 2027 | 21 days | 4°56' Scorpio back to 19°19' Libra |
| January 24, 2028 | February 14, 2028 | 21 days | 19°42' Aquarius back to 3°59' Aquarius |
| May 21, 2028 | June 14, 2028 | 24 days | 16°19' Gemini back to 7°45' Gemini |
| September 19, 2028 | October 11, 2028 | 22 days | 18°36' Libra back to 3°29' Libra |
| January 7, 2029 | January 27, 2029 | 20 days | 3°38' Aquarius back to 17°32' Capricorn |
| May 1, 2029 | May 25, 2029 | 24 days | 26°40' Taurus back to 17°34' Taurus |
| September 2, 2029 | September 24, 2029 | 23 days | 1°50' Libra back to 17°27' Virgo |
| December 22, 2029 | January 11, 2030 | 20 days | 17°42' Capricorn back to 1°26' Capricorn |
To the hour: Mercury turns retrograde February 9, 2027, 12:35 PM ET and turns direct March 3, 2027, 7:35 AM ET.
What retrograde motion actually is
No planet goes backwards. Retrograde is an appearance, and it is the appearance that gave astronomy one of its hardest problems for two thousand years. A planet looks like it reverses because we are watching it from another moving planet: when the Earth overtakes an outer planet on the inside of its orbit, or an inner planet overtakes us, the line of sight swings the other way for a while.
The same thing happens on a motorway. Overtake a slower car and, against the distant hills, it appears to slide backwards for a few seconds. Nothing about the other car changed. Your position did.
Explaining those loops is what Ptolemy's epicycles were for, and getting rid of them is a large part of why heliocentric astronomy won. So retrograde motion is completely real, completely understood, and entirely a matter of where you are standing.
What Mercury retrograde is read as
Mercury retrograde is traditionally read as a review of communication, travel, paperwork and anything with a send button. The reasoning is straightforward once you know what the motion is: the planet covers the same stretch of zodiac three times, forward, back, and forward again, so anything it touches gets touched three times. Revisiting is a description of the geometry before it is an interpretation.
Mercury is retrograde about 19 per cent of the time, so roughly one person in five is born with it retrograde. That figure is worth knowing, because the amount of attention a retrograde gets is almost exactly inverse to how rare it is. Mercury retrograde is famous and common. Venus retrograde is uncommon and barely discussed.
| Planet | Retrograde | How often |
|---|---|---|
| Mercury | about 19% | 3 or 4 times a year, 3 weeks each |
| Venus | about 7% | every 18 months, about 6 weeks |
| Mars | about 9% | every 2 years, 2 to 3 months |
| Jupiter | about 30% | yearly, about 4 months |
| Saturn | about 36% | yearly, about 4 and a half months |
| Uranus | about 41% | yearly, about 5 months |
| Neptune | about 43% | yearly, about 5 months |
| Pluto | about 44% | yearly, about 5 and a half months |
The outer planets are retrograde for so much of the year that treating one as an event makes little sense. What astrologers watch there is the station: the few days the planet appears to stand still before turning, which is when it is moving slowest against the sky and sitting longest on one degree.
What the evidence saysThere is no measured effect of Mercury's apparent motion on electronics, travel, contracts or anything else, and the studies that have looked have found nothing. What is well documented is confirmation bias: once you are told to expect things to go wrong, you notice and remember the ones that do. That does not make the practice worthless, and plenty of people find a scheduled three weeks of reviewing and double-checking genuinely useful. It does mean the honest claim is smaller than the popular one, and anybody telling you not to sign a contract is overstating what this is.
What to actually do with it
- Use it as a prompt, not a prohibition. Mercury retrograde is a good three weeks to re-read, revisit and finish things, which is useful advice whether or not the astrology holds.
- Do not postpone something important on account of it. People have lost jobs and houses waiting for a planet, and no reputable astrologer would advise that.
- Back things up and read the email before you send it. That is good practice in any three weeks.
- If you want to test it, write down what happens. Most people who are certain about retrogrades have never kept a record, which is exactly the condition under which bias thrives.
Being born with it retrograde
Mercury is retrograde about 19 per cent of the time, so roughly one person in five is born with it retrograde, so a meaningful share of people have Mercury retrograde in their birth chart. The usual reading is that the planet's job gets done inwardly or on a second pass rather than straightforwardly, which is a description rather than a problem. It is not a flaw, it is not rare enough to be special, and a chart with it is not worse than one without.
Whether yours is retrograde needs the chart calculated, although for this one a birth time is less critical than usual: retrograde status does not change through a day.
Questions people ask
When is Mercury retrograde?
February 9, 2027 to March 3, 2027. The table on this page lists the next ten periods.
How often does Mercury go retrograde?
Three or four times a year, for about three weeks.
What does Mercury retrograde affect?
It is read as a review of communication, travel, paperwork and anything with a send button.
Does Mercury actually move backwards?
No. It is an optical effect of watching one moving planet from another moving planet. The same thing makes a slower car appear to slide backwards as you overtake it.
RubyAstro writes about astrology for reflection and self-understanding. Nothing here is medical, legal or financial advice, and none of it is a prediction of events. Read our full disclaimer.
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