Calendar token edits based on time zone

Would'nt it be great to be able to edit the calendar token based on the time zone of the event in the program. For instance, I'm (and also my Marketo time) is in the IST time zone and to set up a calendar token for a program happening in London taken a lot of effort in double checking and ensuring that the correct time is mentioned.

It would be awesome if we could have a time zone option to choose while setting up calendar token. Thanks.