Ireland will open up their 2019 World Cup campaign against Scotland in Yokohama Stadium, before taking on Japan and two qualifiers.
The match with Scotland takes place on Sunday 22 September, 2019, with the game kicking off at 8.45am Irish time.
The clash with Japan will be in Shizuoka the following Saturday with the game beginning at 8.15am
The third game against a European qualifier will be on Thursday 3 October in Kobe at 11.15am.
Ireland's final group match will be against a play-off winner on Saturday 12 October at 11.45am in Fukuoka.
Ticket sales for Rugby World Cup in Japan will begin in January.
See the full list of fixtures here.
The tournament's 48 games will be spread across 12 cities, with each venue hosting a minimum of two matches.
Yokohama's International Stadium stages four pool matches, in addition to both semi-finals, and then the final on 2 November.
