Dayparting is the practice of scheduling changes to your campaigns at specific times of the day to follow known trends. The goal of these intra day changes is to maximize profits when you know conversions are the strongest and minimize spending when conversion is the weakest. If you want to use this advanced technique, there are basically 2 steps.
Data Gathering phase:
You have to know your trends in order to make good decisions about your bid scheduling. Let’s use Azoogle as an example. In Azoogle you can check your stats by the hour, and export those reports. In your statistics, simply choose “By Day Report” then click the “BH” selection to show results by hour.