View the complete Mercury retrograde calendar including shadow periods, retrograde start and end dates, and the signs Mercury moves through. Free, no sign-up required.
Mercury appears to move backward through the zodiac from Earth's point of view about three or four times a year, for roughly three weeks at a time, an optical effect astrologers call Mercury retrograde. This calendar lists every Mercury retrograde period from 2020 through 2030, including the exact start and end date of each retrograde, the sign or signs Mercury moves through during it, and the shadow periods before and after, the weeks when Mercury is covering the same degrees it will retrace during the retrograde itself. Mercury retrograde is popularly associated with communication mix-ups, travel delays, and technology glitches, which is why many people check these dates before signing contracts or making major purchases.