Retrograde in History · 1929
Saint Valentine's Day Massacre
On February 14, 1929, Mercury was mid-loop — retrograde in Aquarius, tracing backward through 10°29′ of the sign.
WhenFebruary 14, 1929♒︎Aquarius 10°29′Rx windowJan 29 – Feb 19, 1929
The record
February 1929 gang showdown in Chicago, Illinois, USA
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.