It's one of the busiest days of the year on the club front, with a whopping 18 county finals set to be decided.
Ten of the finals are in football and eight in hurling. Two of the perennial favourites for the All-Ireland club football honours, holders Corofin and Crossmaglen, are in action in the Galway and Armagh SFC finals respectively.
The two Ulster club SHC semi-finals are also scheduled for Dungannon and Owenbeg.
Football
Armagh SFC final
Armagh Harps v Crossmaglen Rangers, Athletic Grounds, 4pm
Carlow SFC final
Old Leighlin v Palatine, Netwatch Cullen Park, 3pm
Cavan SFC final
Castlerahan v Kingscourt, Breffni Park, 3pm
Down SFC final
Castlewellan v Kilcoo, Pairc Esler, 4pm
Fermanagh SFC final
Derrygonnelly v Roslea, Brewster Park, 3.30pm
Galway SFC final
Corofin v Mountbellew-Moylough, Tuam Stadium, 3pm
Offaly SFC final
Edenderry v Rhode, O'Connor Park, 2.45pm
Tyrone SFC final
Killyclogher v Trillick, Healy Park, 3.30pm
Westmeath SFC final
Castledaly v St Loman's, Cusack Park, 3.30pm
Wicklow SFC final
Rathnew v St Patrick's, Aughrim, 2.30pm
Hurling
Clare SHC final
Clonlara v Sixmilebridge, Cusack Park, 3pm
Cork SHC final
Glen Rovers v Sarsfields, Pairc Ui Rinn, 3.15pm
Leitrim SHC final
Ballinamore v Carrick, Pairc Sean Mac Diarmada, 4pm
Limerick SHC final
Na Piarsaigh v Patrickswell, Gaelic Grounds, 3pm
Louth SHC final
St Fechin's v Pearse Og, Dunleer, 1pm
Mayo SHC final
Ballyhaunis v Tooreen, Ballyhaunis, 2.30pm
Meath SHC final
Kildalkey v Kiltale, Pairc Tailteann, 2.30pm
Roscommon SHC final
Four Roads v Padraig Pearses, Athleague, 3pm
Ulster club SHC semi-finals
Ballycran (Down) v Slaughtneil (Derry), Dungannon, 3.30pm
Cushendall (Antrim) v Middletown (Armagh), Owenbeg, 3.30pm