From the If your not first your last department.
The Flash is the first of the CW’s shows to return for the fall TV 2016 schedule. It is followed by new series No Tomorrow, and then Arrow Season 5 will premiere the next night. It wasn’t a surprise that the speedster was renewed for a third season or that he got to stick to his usual Tuesday night slot at 8 p.m.
From the following week, he will be joined by Supergirl and Legends of Tomorrow on Monday and Thursday, respectively. The whole week is set up for a superhero spectacular.
via Fall TV 2016 Schedule: When Will ‘The Flash’ Season 3 Premiere On The CW? [Spoilers]