Currently, there is no time zone configuration for Profile Update campaigns. Because of this, Profile Update campaigns run on the UTC time zone.
This might cause some confusion when scheduling the start and end time for a campaign. Make sure to take into account that the end data for the campaign will be in the UTC time zone. For example, it is the last day of a Profile Update campaign. This campaign will end at midnight, 12 AM UTC. When this is converted to PDT, the campaign ends at 5 PM PDT, 7 hours before the end of the day.