The 11th day of a month

[Hillsberry]

Okay my sister brought this up during dinner today and I thought I would post this here to see what you guys think. Alright so we all know that the World Trade Centers went down on September 11, 2001. Now a few days ago Japan had a huge tragic earthquake which then formed a tsunami. This happened on March 11, 2011. There was another tragic event that happened on the 11th day of a month but I don't remember what it was. Also in the bible there is something about the 11th hour. I don't know I just find it alittle weird that these 2 large tragic events happened on the 11th day of a month.