We've seen two of the holidays that the students of Hogwarts celebrate, as far as I remember; Halloween and Christmas.
Are there any others? Or do they follow whatever muggle traditions are closest to them; for instance, do Irish Wizards celebrate St Patrick's Day?
I'm asking purely because I'm interested in knowing how the wizarding world has altered traditions which are common among muggles.
(And I'm not limiting it to religious holidays; are there, for instance, bank holidays, or do goblins not want/need holidays?)