Mornings | NBC Affiliates | ShopTalk In Dayton, WDTN Will Launch 4:30 a.m. Newscast By Merrill Knox on Nov. 11, 2011 - 9:45 AM WDTN, the NBC-affiliate in Dayton, will launch an expanded newscast with a 4:30 a.m. start time on Monday. “The weather is changing and there’s no better time to give our viewers an even-earlier look at how they should ...