Changing time zone
You can change an advertiser's time zone by going into their profile page. Look for the time zone drop-down menu where you'll be able to select your desired time zone. Keep in mind, for example, that if your local time is Pacific and the account you're using is in Eastern Time, any scheduled messages will out in Eastern Time according to the account settings. Please note, the default time zone will be based on the administrator settings.
Have a great week!