Daily Open and Close times in ThruText are based on a 24-hour clock for a single day in the time zone set for that campaign. Always set your close time to be after your open in the same 24-hour period. If your close time is before the open time, the system will open the campaign at the earlier time and close it at the later time.
In this example, the admin wants the campaign to run from 9am until the end of the day. Since 12 am is 0000 on the 24-hour clock, it is the start of the day. The system will open the campaign at 12 am and close it at 9 am, or 0000 to 0900 on the 24-hour clock.
If you want your campaign to run till the end of the day, set your close time to 11:59 pm
In this example, the admin has closed the campaign at 11:59 pm. Their campaign will run from 9 am to 11:59 pm, or 0900 to 2359 on the 24-hour clock.