Glasgow will face Cardiff at the Arms Park on Friday 24 March (ko 7.10pm). the game will be shown live on BBC Wales.
The Warriors will face the Ospreys at Liberty Stadium on Saturday April 8 with a 5.30pm kick-off. That game will be shown on S4C.
The Celtic League website also indicates that Glasgow's game with Ulster will now take place on Saturday 15 April with a 5.30pm kick off time. The game will be shown on Setanta.
You can see more details here