Retrograde in History · 2013

resignation of Pope Benedict XVI

On February 28, 2013, Mercury was mid-loop — retrograde in Pisces, tracing backward through 17°50′ of the sign.

WhenFebruary 28, 2013♓︎Pisces 17°50′Rx windowFeb 23 – Mar 17, 2013
Mercury retrograde♓︎PiscesWikipedia
The record

event in which Pope Benedict XVI resigned on 28 Feb. 2013 at 20:00 CET, after an announcement on 11 Feb.

More from this window · Feb 23 – Mar 17, 2013

Coincidence, not causation: the date is real and ephemeris-based, but a retrograde window is observed, never blamed. For entertainment, not navigation.