According to the Catholic Church in the UK, if you are celebrating St Patrick's Day as usual today, you're making a BIG mistake.
Normally marked by a giant celebration on the 17th of March, St Patrick's Day is actually an opportunity for Christians to remember the patron saint of Ireland. A certain Saint Patrick.
However, this year Easter is early (this weekend, woo hoo) and therefore the Catholic church decided this simply MUST take precedence over St Patrick's Day in their calender. Therefore St Patrick's Day is simply not on the calendar of feast days this year, they have canceled it. Which, to be honest, achieved nothing expect to make the church look totally out of date.