It's in the Heineken Champions Cup competition.
Leinster and Ulster's Heineken Champions Cup last-16 tie will be played at the Aviva Stadium on Saturday, the 1st of April.
The EPCR has confirmed the kick-off details for the eight knockout matches - that game will start at 5.30
Munster's game away to the Sharks in Durban's on the same day and kicks off at 12.30 Irish time.
Connacht's Challenge Cup last-16 tie away to Benneton has been confirmed for 3pm Irish time - also on the Saturday.