So, the Vatican moved St Patrick’s Day this year. This doesn’t appear to have sunk in to the many “Irish” who seem to take the day as an excuse to drink to excess and celebrate the fact that their great-great-grandmother once went to Ireland.It raises an interesting point about the celebration of Saints days and Civic holidays. St Patrick’s being on a Saturday means that the bank holiday in Ireland still falls on the 17th (the first Monday, just as you get Xmas and Boxing Day bank holidays where the actual dates land on the weekend). So, what are people celebrating and when?If you are Catholic and celebrating the Saint’s day, then clearly this should happen on the 15th this year (as the Vatican has told you this is what you’re going to do). So what are people celebrating on the 17th? The fact that they are due a day off if they are eligible for a bank holiday; their Irishness; limited edition green beer?There isn’t supposed to be a separation of Church and State in the UK, despite England being pretty damn multicultural. So in a country with some pretty robust anti-discrimination laws you get these little quirks like public holidays for Xmas, Boxing Day and Easter. Then you also get random ones like the Queen’s birthday (which moved one year, or was it that we got an extra one, I can’t remember). Everyone gets the day off, regardless of religions affiliation, yet, particularly Easter, the days have religious significance. It amuses me greatly that the public holiday for Easter can’t be set until Passover has been determined. This then sets the dates for Good Friday and it all rolls merrily along. Now we find that it interacts with Saints Days.I wonder when people who have St Patrick as their personal saint celebrated? Presumably on Saturday since that was the religious celebration.