You may select using either days or hours. If you want to select by the day, use the day selector. If you use days, you may select today (where the system will automatically select all the time until the end of the day) or a day or days in the future, where the system will select the entire day from 12:00AM to 11:59PM. If you want to select times less than 24 hours, use the hour selector. You may choose a start and end time as short as a single hour. Whether you choose hours or days you may select a start time which is either right now or a specific day (if you select daily) or time down to 15-minute intervals up to six months in the future. Your time zone is determined by your business ZIP code.