United's trips to Nottingham Forest, Gillingham and Doncaster have all been altered, as has the visit of Yeovil Town over the Easter weekend.
England's Euro 2008 qualifying game against Andorra has brought the trip to Gillingham forward, and it will now take place on Friday September 1.
The derby at Doncaster on September 30, set to be United's last ever visit to Belle Vue, will kick-off at 12noon following police advice.
And game at the City Ground will still be played on October 7, but will kick-off at 12.15 to allow for live coverage on Sky Sports.
The visit of Yeovil to Glanford Park will be on Good Friday, kicking-off at 7.30, rather than on Easter Saturday as originally scheduled.