Over here we don't call days like that a 'holiday'. You guys call Valentines day a holiday too right?
We might refer to Christmas as 'The Christmas Holidays' or Easter as 'Easter Holidays' or official days off work we'd call a public holiday (such as Anzac Day, Australia Day etc), but we wouldn't just call it a holiday. We do call the breaks in the school year holidays though, even if you don't go anywhere. We don't use the word vacation to describe a trip somewhere. We say we're 'going on holiday', which might be during the school holidays or could be during term time, in which case, you get time off to take a holiday.
