Sign up for our What's On newsletter - for all the latest whether you're staying in or heading out and aboutIf you're hoping to plan ahead for the long weekends, these are the official dates for every public holiday over the next 12 months.Surprisingly, the UK used to have a massive 33 official holidays on the calendar - made up mostly of saints days and religious celebrations. But in 1834, it was decided this was too many, and by 1871, the Bank Holidays Act had the number reduced and made into