1. To change the timezone of a courier, you have to be first on your inspector account.
2. Press on the Courier tab from the left side of the page.
3. Then press on the Local timezone/My timezone slider on the left side of the page above the name columns in order to see the time when the courier was created based on the zone selected. The Local timezone can be changed from the Admin Profile Settings by the admin account and My timezone can be changed from the Inspector Profile Settings.