I missed an appointment this morning, well a phone call actually, with a person I want to do some business with when I am in London this summer.
By mistake, mine, I entered it in the wrong time period.
Oddly enough I have another meeting soon and Google sent me a reminder about it as well, but their reminder shows the wrong time. It's is 4 hours off, not 5.
This one I have properly, we both used Lotus Notes.
So if you are going to Gmail, better watch yourself on those across time zone schedules.