Pro14: Ulster to host Ospreys on opening night
Ulster will host Ospreys on the opening night of the 2019/20 Pro14 season.
Dan McFarland's side will have home advantage for the 27 September match with Glasgow Warriors away to Cheetahs in the opening game of the day.
Leinster will start their title defence away to Benetton on 28 September while Munster host Dragons and Connacht will visit Scarlets on the opening weekend.
The start of the league has been delayed by a month to accommodate the 2019 Rugby World Cup.
The first five rounds of the tournament will take place during the tournament in Japan to help avoid a clash with the 2020 Six Nations.
Ulster will hope to go a step further this season after reaching the Pro14 semi-finals last year, with Glasgow Warriors denying them a place in the decider.
Ulster's first Interprovincial derbies will take place on 9 November when McFarland's side travel to Munster and Ulster are also away to Leinster on 20 December.
It's the first of three consecutive festive derbies with Connacht (27 December) and Munster (3 January) both at Kingspan Stadium.
The home encounter against Leinster will take place in Belfast on 29 May.
The fixture details for the knock-out stages will be confirmed at a later date.