Select the times of day and days of the week you would like to serve under the ‘Edit Targeting’ section of the Line Item, under the ‘Day Parting’ section. Day parts target users according to the time zone they are located in when the ad is served.

For example, a Line set to serve from 9am to 9pm in the U.S., will start serving at 9am EST to users on the eastern coast, and will start serving to users on the western coast at 9am PST. To serve ads across the U.S. at the same time in every time zone, you will need to set-up a line for each time zone and set the day parts accordingly.

If the box is checked next to the day of the week, the campaign will serve on this day. To remove a day, uncheck the box.