DUTCHSINSE backs it down for us:
The Mexican Government agency plans the 7.9 Earthquake drill for March 20 at noon, and, guess what, it happens for real! Two minutes after the original planed time (12:02 p.m..) the earthquake close to 7.9 really strikes Mexico, while all emergency system goes off just a few minutes earlier in the major cities. CNN reports of how the emergency warning system is great in Mexico, but doesn't report about the drill plans?!