Originally Posted by
joejones
Usually I see people say something like "8 am New York, 1 pm London, 8 pm Hong Kong, 9 pm Tokyo" when scheduling a conference call, which is pretty clear for everyone.
Yes, it usually makes sense to make it understandable to everyone.
Where I would like everyone to understand CET, BST and EST, usually it's much more useful to say "14:00 Frankfurt, 13:00 London, 8:00 New York" and everyone gets it.