Apparently the game has been brought forward because of a request from Greater Manchester Police, due to the fact that both Stalybridge and Hyde were due to be at home on the same date.
If Manchester United and Manchester City were at home on the same day, I could understand the police requesting a date change; to a certain extent the same would apply to Bury and Rochdale. But Hyde and Stalybridge? I reckon the combined attendance will only be around 1,500 so something doesn't quite add up.
When the match does come round, it'll be interesting to see how many police are actually on duty in and around the stadium. My guess is not many.