Which of the five visible planets were moving backwards on the day you were born — computed, with the exact degree and the period it fell inside.
Each planet's retrograde: Mercury retrograde, Venus retrograde, Mars retrograde, Jupiter retrograde, Saturn retrograde, Uranus retrograde, Neptune retrograde, Pluto retrograde, birth chart and big three.
Birth time is not needed — no planet stations more than once a day, so the date alone settles it except within hours of a station, which the result flags.
This is the context that makes a retrograde birth placement readable, and it is missing from every page that sells one. Mercury is retrograde about 19% of the time, so roughly one person in five was born under it — a fifth of everyone you know. Saturn is closer to a third, Jupiter about a quarter. Mars is the genuinely uncommon one at around 9%.
So “born during Mercury retrograde” is not a rare marking; it is a common one. If a reading treats it as a distinguishing feature, the reading is treating a fifth of the population as distinguished.
A planet stations at a single moment, and the two states either side of it last weeks. The only dates where the time of day matters are the station days themselves, and on those the daily-motion figure above will be close to zero — which is your signal to treat the result as borderline rather than settled.
Born with Mercury retrograde, a person often thinks before speaking, rehearses conversations or processes ideas in their own order. It is traditionally read as a reflective, sometimes unconventional mind rather than a problem.
Venus retrograde at birth is traditionally read as a love life that runs on its own timetable — past partners returning, unusual tastes, or learning self-worth before feeling secure in relationships.
Mars retrograde at birth is traditionally read as energy that works inwardly first — a person who hesitates before acting, then acts with unusual persistence, or who struggles to express anger directly.
Jupiter retrograde at birth is traditionally read as growth that comes from inner conviction rather than outside approval — a personal philosophy built independently.
Saturn retrograde at birth is traditionally read as an internalised sense of duty — a strict inner critic, and authority developed from within rather than handed down.
These are modern interpretive conventions. Retrograde motion itself is an optical effect of Earth overtaking or being overtaken, and a natal retrograde is read through the planet’s sign, house and aspects like any other placement.