on january 8, 2013, fox announced that it would launch a spin-off adult animation block – similar in format to adult swim – called animation domination high-def. the block (alternately known as adhd) ran saturday late nights, originally airing for 90 minutes from 11:00 p.m. to 12:30 a.m. local time in most markets – later reduced to 11:00 p.m. to 12:00 a.m. on september 7, 2013 with the 12:00 a.m. half-hour being given back to its owned-and-operated stations and affiliates to carry other programming – with some affiliates delaying the block by 30 minutes to an hour to run late evening newscasts. overruns of fox sports broadcasts caused further delays on many evenings.