Moon day and Columbus day are my own holidays.
Columbus day is officially in the fall, but for me it is July 7th as I moved to Columbus on 7/7/77
The real Columbus day is a big day here with fireworks!
My big "personal" holidays are Halloween, when I have an annaul pumkpkin party that gets bigger every year. LAbor day used to big for me, as Jimmy Buffet would come to MA and perform. A great "end of the summer" tradition. However, the past few years, he came at other times.
And of course, Opening Day at Gillete Stadium. That should be a National Holiday.