I think there is an other problem too. If you will come to the german moodle meeting from Thessaloniki. You think the beginning is at 16.00, but we will meet at 14.00 local time at cologne (Germany). In an other case we make a date for a chat session ast 14.00 and it is ok that your time shows 16.00.
Is ist possible ta add a option to add a fixed local time and a server time ?