Ospreys take on Toulouse, while Scarlets are at home to Exeter.
KO for both games is at 13:35
More top news
Hannah is in Carmarthenshire finding out what is happening at the National Botanic Garden of Wales 15 years after it first opened its doors.
A prize-winning pooch from Bala caused a stir at this year's Crufts competition after going to the toilet in the arena.
A cloudy night through many central and western parts, clearer skies at times in the east. A mild night with brisk southwesterly winds.