I wondered if someone could help me with this. Just recently when I enter a new item into iCal and wait a second it syncs and is fine on the iPhone and iPad and on iCloud online as a timed event. When I then enter the details and select all day event it spans that day and the following day only on the iPhone and iPad not iCloud nor on my Macbook Retina. I have read about adjusting Time Zone support and have tried numerous settings on all devices including setting all the same and also 'Off' and different combinations of these and makes no change at all. I hope somebody can help me with this. Thanks in advance. Mike.