"Requiem" is the seventh episode in the fifth season, and the 101st overall episode, of the American crime drama television series "NCIS". It first aired on CBS in the United States on November 6, 2007. The episode was written by Shane Brennan and directed by Tony Wharmby.

Can we draw the following conclusion?
NCIS season five started on September 6, 2007.
It's impossible to say