Retrograde in History · 1870
1870 United States Census
On June 1, 1870, Mercury was mid-loop — retrograde in Gemini, tracing backward through 15°37′ of the sign.
WhenJune 1, 1870♊︎Gemini 15°37′Rx windowMay 23 – Jun 16, 1870
The record
The 1870 United States census, conducted from June 1, 1870, to August 23, 1871, recorded a total population of 38,925,598 and was the first to provide detailed demographic information on African Americans.
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.