Question: when did the first episode of phineas and ferb air
Answer: 2007-08-17; 2007 August, 17; 2007 08 17; 17 08 2007; 2007 August 17; 2007-08-17; 17-08-2007; 17/08/2007; 17 August 2007; 08 17 2007; 08/17/2007; 08-17-2007