The Broadcast Calendar is designed to conform to a uniform billing period and was adopted by broadcasters, agencies and advertisers for billing and planning functions. The standard broadcast week starts on Monday and ends on Sunday. The standard broadcast month ends on the last Sunday of the calendar month.
Nielsen Survey Dates
Nielsen retired the diary methodology in July 2018, and all Nielsen local markets are now measured year round. As a result, there are no longer only special “Sweeps” months. Instead, there are now twelve survey periods and all months are measured the same way.