To schedule a campaign for a later time, you can either select the time that you want the campaign to launch or use SendOptimally. Both the Push API and the Platform UI support SendOptimally. This It is important to note that the scheduled time represents the time when the campaign is processed; this means that the campaign may launch at a later time.
It is important to note that the Platform UI does not adjust for different time zones. Therefore, to launch a campaign in several time zones, you must launch separate campaigns for each time zone.