I have read many threads some dating back 3-4 years on this issue but i find no resolution.

I use Mac Outlook 2011, IOS devices, etc, during winter time no issue, but when Israel Summer Time comes, my calendar is a mess.

Any meeting I set is generally OK but still problematic but if i am invited to a recurring meeting (majority for me) then the start and end times keep changing for almost all such events. For example a meeting is set with start time 1200 IST repeating weekly. If one instance is changed the meeting can balloon adding hours on the start and end so it ends up being 1100 to 1400 or even longer. Always it seems to add one hour earlier to the start but the end can be anything, i have seen more than a day added. 

I have tried setting nearby timezones (Athens for example) no change, I tried resetting all calendars (simultaneously delete IOS and OSX) and after restoring same issue. Seems to happen with specific users, no logic. I am in a company of 1000+ employees all using Windows + IOS no issue, only I am on Mac + IOS.

Windows+IOS=OK

Mac+IOS=NOK 

In all cases we have latest Exchange Server fully updated.

If i change the event in my calendar (it warns me that sender changes wont be reflected) I can override the bug but after some time (minutes to hours) it changes back again.

I cannot imagine the issue effects so many people, has been around for so many years, and no apparent solution.

Any ideas welcome.