Why all the reruns to early in the season?

United States
@stealthy (7875)
October 27, 2009 5:41pm CST
So why are they having so many reruns so early in the season? For example NCIS, NCIS: LA and The Good Wife are all reruns tonight(Tuesday). Monday it was How I Met Your Mother and The Big Bang Theory and I think there are many more later in the week.