The SPFL champions opening home game against Dundee United will be played on Saturday, August 16, with a new kick off time of 12.45pm.
Fergus McCann will return to the Parkhead club to raise Celtic's third championship flag in a row.
The following Saturday, August 23, Celtic will visit the Highlands to take on Inverness Caley Thistle and the game will kick-off at 12:30pm.
Celtic's away trip to Dundee will now be played on Sunday, August 31 at Dens Park with a 12.30pm kick off.
Celtic's opening game in the defence of their title, away to St Johnstone on Wednesday, August 13, has been confirmed as a 7:45 kick-off.
Wednesday, August 13, 2014
St Johnstone v Celtic - 7:45pm
Saturday, August 16, 2014
Celtic v Dundee United - 12:45pm
Saturday, August 23, 2014
Inverness Caledonian Thistle v Celtic - 12:30pm
Sunday, August 31, 2014
Dundee v Celtic - 12:30pm