The opening weekend is in December.
Leinster will begin their Champions Cup campaign against Bath in December.
Their Pool A opener has been fixed for Saturday, December 11th at the Aviva Stadium.
Ulster are away to Clermont that evening.
The following day, Munster are in Coventry for a meeting with Wasps.
Also on the Sunday, Connacht open their campaign away to Stade Francais.

Tuesday Morning Sports Update
All Ireland Football Championship Opening Round Fixtures Confirmed
Tommy O'Brien Among Injury Doubts For Leinster's Champion Cup Final On Saturday
Monday Morning Sports Update
Sunday Evening Sports Update
Mourinho's Benefica Go Unbeaten but Miss Title
Brave Kildare Fall Short in Leinster Ladies Final
Chelsea Appoint Xabi Alonso as New Manager