Events are held across Wales, including a Spitfire flypast in Caerphilly and a parade in Wrexham.
Five will be ordained as deacons and four as priests.
Road closures and parking arrangements will be in place as thousands head to Wrexham's Racecourse Ground.
The British and Irish Lions need to be "more physical" after Saturday's opening Test defeat to New Zealand, says head coach Warren Gatland.
Geraint Thomas says it has been mentally tough to recover from a partially dislocated shoulder suffered at the Giro d'Italia.
North Wales Daily Post
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