Leinster will open their season in South Africa to face the Lions.
Munster, Ulster and Connacht will kick off their next URC campaigns with home games in the opening round.
On Friday the 25th September, Connacht will host the Stormers and Ulster will face Edinburgh in Belfast.
Munster get their campaign underway against Glasgow at Thomond Park on the Saturday.
On the same day, Leinster will open their season in South Africa - they face the Lions.

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