Olympics day 8: When are Irish athletes in action, TV details, and events to watch

The moment the Ireland 4x400 mixed relay team, from left, Phil Healy, Sophie Becker, Christopher O'Donnell, and Cillin Greene, found out they'd qualified for the Olympic final. Photo by Stephen McCarthy/Sportsfile

Day eight of the Tokyo Olympics starts early on Saturday morning... here's all you need to know ahead of a decisive day for Ireland's hockey and athletics relay teams. 

Team Ireland athletes in action (all times Irish)