i am aware that private employers give holidays, but i know for a fact that not all private employers give every single fed holiday. there are 11 fed holidays, i don’t think anyone else got inauguration day off, this year, outside of DC. and i think columbus and veterans days are not always given off by the private sector.
4th of July is one of the biggies. Any real company will give off Jan 1, Memorial Day, 4th July, Labor Day, Thanksgiving (2 days), and Christmas Eve/Christmas.
Easter-related holidays and deer-killing day may vary by local custom.