I haven't seen this date listed anywhere else, but The Futon Critic has Comedy Bang! Bang! the TV show as premiering on Friday, March 9th (same day as the Portlandia Season 2 finale):
From IFC's press release:
Comedy Bang! Bang! is a sketch variety show featuring celebrity guests, comedy sketches, and animation. The series is hosted by Scott Aukerman (co-creator/director/producer, "Between Two Ferns with Zach Galifianakis"; writer/performer, "Mr. Show"), and based upon his popular podcast of the same name. Music will be provided by the show's resident one-man bandleader, Reggie Watts (comedian/musician/artist/writer/performer as seen on Conan's live tour and on TBS as well as his Comedy Central special "Why $#!+ So Crazy") Comedy Bang! Bang! is produced for IFC by Abso Lutely Productions; Aukerman, Dave Kneebone and Leo Allen serve as executive producers. Jennifer Caserta, Debbie DeMontreux, Christine Lubrano and Evan Shapiro serve as the executive producers for IFC.
Get excited for it!