Departure Time percentage is awarded before credits
The percentage award for the last mission is awarded as soon as the final cutscene fades out (before the credits).
This means that if you do Departure Time as the final objective, that is when the timer ends
(If anyone cares the address I found was 1477A6A0, didn't check if it stays consistent across sessions)
Individual Levels (ILs) have been removed
Dear Tonies, it is with sorrow that we announce that, as of September 18, level leaderboards have been deleted from the game. The reasoning being that the in-game time that is displayed in the menu at the end of missions is flawed (as it is heavily dependent on FPS) and therefore not an accurate rep