Coincidentally, such farewells to Harry Redknapp, Alain Perrin and Paul Hart all occurred within a five-year spell.
In addition, Guy Whittingham missed the deadly date by 24 hours during his 2013 dismissal, leaving a day later.
With that in mind, Brad Hirons has put together the toughest Blues quiz yet – with a focus on the four former Fratton bosses and their win percentages.