I refer to Derby Day as a religious holiday. In this defense of Christmas celebrations, Dr. Krauthammer notes one of his: Opening Day at Fenway.
I personally like Christmas because, since it is a day that for me is otherwise ordinary, I get to do nice things, such as covering for as many gentile colleagues as I could when I was a doctor at Massachusetts General Hospital. I will admit that my generosity had its rewards: I collected enough chits on Christmas Day to get reciprocal coverage not just for Yom Kippur but for both days of Rosh Hashana and my other major holiday, Opening Day at Fenway.
Wow - those are great terms of trade. Life as a minority has its advantages too.