Yeah. Glonass (the Russian system) had an 11-hour outage back in 2014 because they uploaded an incorrect ephemeris to all their satellites and could only correc

Yeah. Glonass (the Russian system) had an 11-hour outage back in 2014 because they uploaded an incorrect ephemeris to all their satellites and could only correct them when they flew over Russia. I think that was the worst GNSS outage of the modern era until this one.