Simplify the following text for a Grade 8 native English-speaking person.
Original: The 1985 Santiago earthquake was a seismic movement registered on 3 March 1985 at 22:47 UTC ( 19:47 local time ) .
Simplified: The 1985 Santiago earthquake was registered the Sunday March 3 , 1985 at 22:47 UTC ( 19:47 local time ) .