I had this problem which was frustrating. Eventually I went to the calendars and unticked the uk holiday setting. This has now sorted it. Apparently as Easter Monday is on April 1st it doesn't le it.

Nope, untucked the uk holidays and mine still crashes on March ? Oh well ....

Have you tried deleting all entries for April 1 ? I purchased "Awesome Cal" and have never looked back.

Took 1st April event out and Voila... March is back !! Thank-you Ron :-)

Thank you your a star! ( By the way it was still working in day and week mode but of course not in month.)

I have a different solution. If I un-check UK Holidays on my MacBook Pro (so it doesn't show on the Calendar), and wait a few moments for it to sync, then the iPad crash problem goes away ! Hope this works for you too.

Incidentally, I don't know if it's part of the problem, I use BusyCal2 on my MacBook Pro and unchecked the UK Holidays from that.

I was removing the all day events on my ipad for 1st April, and went to an all month setting for March. That worked, but I left it set as an all month setting for March and put back the Bank Holiday setting. It then crashed and I could not get back to my calendar. I went to my time and date settings, changed it from automatic, and reset the date for the following day. Hallelujah, it worked.

Today the iOS 6.1 update became available and fixed this for me. Good luck to the rest of you.

This solution worked for me - thanks for suggesting this. Every year when the clocks change Apple seems to get something wrong! Let's hope they change this soon. By the way I also have a MBP running Lion and an iPod Touch running iOS6 and this issue does not occur on those platforms - only the iPad.