Retrograde in History · 1963
1963 South African Grand Prix
On December 28, 1963, Mercury was mid-loop — retrograde in Capricorn, tracing backward through 20°19′ of the sign.
WhenDecember 28, 1963♑︎Capricorn 20°19′Rx windowDec 26, 1963 – Jan 15, 1964
The record
On 28 December 1963 Jim Clark won the final race of the Formula One season at East London, a December Grand Prix that would not recur until the 2019 Abu Dhabi Grand Prix.
Born inside this same window
Coincidence, not causation: the date is real and ephemeris-based, but a retrograde window is observed, never blamed. For entertainment, not navigation.