Interestingly the two biggest earthquakes in my memory in Mexico City happened in the same day. Sept 19 1985 and 2017 Every year in Sep 19 there is a city wide

Interestingly the two biggest earthquakes in my memory in Mexico City happened in the same day. Sept 19 1985 and 2017 Every year in Sep 19 there is a city wide simulacro. And then in 2017 an earthquake happened for real.