It's doubtful it's local time.....it's usually midnight in the US.
It should be midnight GMT to be fair, the game was made in the UK after all....
352 completed games & apps to 100%
91.47% completion percentage
Last 100% Completion : Mortal Kombat X (1000g) (Xbox One)
Thanks to Rajeanero for the avatar and Mr Chaotix for the sig.