Why is Easter so early this year? Well, it's a moveable feast.
Last Sunday was the first full moon after the March equinox (when the Sun appears more North than South from Earth). The Sunday that follows that is therefore Easter Sunday. That means that Easter Sunday could fall as early as 22nd March and as late as 25th April.
Bonkers? Yes. Blame the First Council of Nicaea in 325. They came up with the rules.
Back in 1928 the UK brought in the Easter Act which fixed Easter Sunday in the UK as the second Sunday in April. However, the legislation has never been implemented, although it remains on the Statute book. It needed the Church's say so. The sticking point? Various Christian churches fear that if they approve it then other Christian decisions may be 'up for grabs.'
Yes, people it's 2016.