Applying day parting is an effective way to optimize
campaign based on the past campaign experience, Advertisers know with their
past experiences specific time in day, usually evening, morning etc or specific
days in week when campaigns usually convert. Some campaigns tend to do week on
weekdays and some on weekends, similarly some campaigns do well in day time,
morning some in night and so on..
Advertisers can target their campaigns to users and allow
the ads to show up time frame which is best converting for them, this is called
Day Parting (when you server ads on selected days), and Can also target
specific time frame in those days like 1 AM - 2 AM, then 4 AM - 5 AM etc..
This is also known as Ad scheduling.
How do i implement this in my campaign?
http://www.mediatrafficreports.com/2013/12/how-to-set-adscheduling.html