Norwegian here. 20 days a year is the legal minimum, while 25 days is the norm. I get 30 days a year while working for an American company, which is a bit ironic.
(It’s common in Norway to take any day that is between two off days off. So May 1st is a national holiday, next year it falls on a Tuesday, so that means many will take the Monday off, a so called innneklemt day. There’s a lot of holidays in May, and next year all of them creates inneklemt days.)