If I remember correctly - and I'm getting old, so I may very well be wrong - in 2011 Easter was really late April 24th. Meaning the Bash would have been over Easter weekend.
Should be April 24-25. Its usually the last weekend in April.
You are correct, Di - Easter was really late that year so we agreed to move the Bash in 2011; but I thought it was a "one time change"...
Okay, back to the original problem.. Why is the date changed?
3rd week in April = pink panties.
4th week in APril = bright yellow panties.