Currently, the Program Schedule Tab contains the Run Once button where you can schedule the program to run immediately or at some later date and time. The date and time set ihere is in my time-zone (set in my account profile).
It would be much better to be able to put date/time in the schedule details and also choose the time zone there rather than in my account details. This way, I would not have to re-calculate each time how my local time zone translates into the timezone where the Marketing Campaign is being run.