Just FYI - the way this site works is the all the experts here are indepedant and we just answer questions based on what we feel we can answer and we try to do so as quickly as we can, but there may be a window where someone doesn't pickup your question. Based on the previous exchange you had with the other expert, I might guess that either other experts weren't online, didn't know the issue you were having or were a bit hesitant to get involved with a customer exchange where you seemed unhappy already. See, we only get paid when customers are happy and rate us 3 stars or higher and sometimes people will confuse rating the current expert with the previous one. So I wanted to explain that since it seems like it is confusing to some people.
All that being said, my name is ***** ***** I disagree with the previous expert - I personally have several calendars I share with my wife and I used to share google calendars with my parents and brothers and I find it very useful to have many google calendars shared. Now the situation you describe seems very strange and I want to make sure I understand what's going on so we can figure this out.
You say you have several calendars and you aren't the owner of them, but you have "read only" rights? Can you edit them? They put an event that has a duration such as 1pm to 3pm and on your view of the same calendar it shows up as an all day event? Is that correct?
I will be honest - not sure what the issue you are having is and I haven't heard of it before, but I am very interested in the problem because it seems fun to solve. I think we can get to the bottom of this together.
FYI - I do have a day job so I can't respond immediately, but I've setup my account to get alerts when you respond to this message. Thanks!