The Mudcat Café TM
Thread #109504 Message #2289916
Posted By: Brakn
16-Mar-08 - 02:56 PM
Thread Name: St Patrick's Day session, nr Lymm
Subject: RE: St Patrick's Day session, nr Lymm
According to Wikipedia it's to do with when the 17th falls within Holy Week.
The last time it was changed was 1940 and the next time will be 2160.