Yes, and sometimes my birthday falls on the 26th, or even the 29th

Today my work is celebrating St. Patrick's Day. Lunch is being served and we're all supposed to be dressed in green.

Here is a quick dialogue between me and a co-worker of mine:

Me: "Do you know why we're celebrating St. Patrick's Day today instead of Friday?"
Him: "Isn't St. Patrick's Day always the 2nd Wednesday of every March?"
Me: "Never mind, I'll ask somebody else."