I'm sure you've wondered why the date of Easter changes every year; Easter Sunday can fall on any date between 22nd March and 25th April.  The simple explanation is that it's all to do with Easter being based on the lunar calendar rather than the solar calendar.  Easter always falls on the first Sunday following the first full moon after the 21st March. 

However when I said 'the simple explanation', it's not that simple .............. the full moon mentioned above is actually the Paschal Full Moon, not the Astronomical Full Moon; the Paschal Full Moon can vary as much as two days from the date of the actual full moon, with dates ranging from March 21 to April 18.  As a result, Easter dates can range from March 22 through April 25 in Western Christianity.

OK, so it's complicated, but there are many more detailed explanations on Google.  If you want to know just how complicated it can get, just type in 'why does the date of easter change every year' or click here and select the explanation that makes the most sense to you.

Now you know why, perhaps you'd like to know when?    The table below lists the dates for Easter and some other changeable dates up to 2030 .................