According to http://www.worldtimeserver.com it is currently 06:19 PM. What time did the plane hit and how many people might be in the building? It might be after work hours.
UTC/GMT is 16:19 on Thursday, April 18, 2002
the current time in Italy: 06:19 PM
Thursday, April 18, 2002
I believe it crashed at 10 minutes before 6:00 p.m., Milan time. Probably still quite a few people in the building.