The most universal strategy among advertisers is to start a new crusade with ad frequency set to 1 3 times a day and run it 24/7 to later develop traffic at peak hours by increasing the variety of ad impressions per user. In other words, once you discover a amount of time days, hours that converts better than others, you boost the ad frequency cap for this period to achieve more impressions. Try to avoid different types of assumptions like: people sleep at the present of the day. You don’t want find your self pondering “that have to have been bad timing, huh?”.
You like to know evidently. It pays off to check.