Ulster will play their Heineken Cup quarter-final against Saracens at Ravenhill on Saturday 5 April, with an 18:30 BST kick-off in Belfast.
The date and kick-off time was confirmed by the tournament organisers, the ERC, on Monday.
Ulster will be hoping to exact revenge for their quarter-final exit at the hands of the same opposition at the same stage last season.
Saracens emerged 27-16 winners at Twickenham on that occasion.
Ulster came out of this season's pool stages as number one seeds, having been the only team to win all six of their group matches.
The winners of the quarter-final will have home advantage against French side Clermont Auvergne or English Premiership outfit Leicester Tigers in the semi-finals.
If Ulster progress, the semi-final is set to be played elsewhere in Ireland, possibly at the Aviva Stadium.
In the other quarter-final games, Toulon are at home to Leinster on Sunday 6 April and Munster play Toulouse at Thomond Park a day earlier.
Heineken Cup quarter-finals - Saturday 5 April
Munster v Toulouse, 13:30 BST
Clermont Auvergne v Leicester Tigers, 16:00 BST
Ulster v Saracens, 18:30 BST
Sunday 6 April
Toulon v Leinster, 16:30 BST
Semi-finals - April 26 and 27
Ulster or Saracens v Clermont or Leicester
Toulon or Leinster v Munster or Toulouse