Retrograde in History · 2021
2021 Facebook outage
On October 4, 2021, Mercury was mid-loop — retrograde in Libra, tracing backward through 22°14′ of the sign.
WhenOctober 4, 2021♎︎Libra 22°14′Rx windowSep 27 – Oct 18, 2021
The record
On October 4, 2021, Facebook and its subsidiaries including Instagram, WhatsApp, and Oculus were globally unavailable for six to seven hours, also blocking third-party logins.
More from this window · Sep 27 – Oct 18, 2021
Coincidence, not causation: the date is real and ephemeris-based, but a retrograde window is observed, never blamed. For entertainment, not navigation.