I hadn't really planned on doing any commentary, but something caught my attention. The other day on the radio, I heard something to the effect on, "And on the 10th anniversary of 9/11..."
From a pure writing / grammar perspective, that statement is nonsense. There is no such thing as the anniversary of a month and date. September 11 happens every year. You could argue that every year, there is a 10th anniversary of 9/11.
And yet, to those of us who lived through that day, the statement makes perfect sense.
Just my $0.03.