IT'S A DOGFIGHT
'(<a href="http://www.j-archive.com/media/2011-09-19_DJ_10.wmv">Jimmy of the Clue Crew presents the clue on a monitor.</a>)  The blue pilot sees the red plane at a position called 12 o'clock; after a tight overhead loop to attack, the red plane is now directly behind in the position called this time of day'
6 o\'clock