The William Hill Scottish Cup Fourth Round fixture dates and kick-off times have been confirmed.

In the event of a replay (R) or postponement (P), the fixtures will be played on the dates indicated below.

Aberdeen v Stenhousemuir Saturday 19 January Pittodrie Stadium, 3pm P: Tuesday 29 January Pittodrie Stadium, 7.45pm R: Tuesday 29 January Ochilview Park, 7.30pm

Auchinleck Talbot v Ayr United Saturday 19 January Beechwood Park, 12.15pm P: Wednesday 30 January Beechwood Park, 1pm R: Tuesday 29 January Somerset Park, 7.45pm

Celtic v Airdrieonians Saturday 19 January Celtic Park, 5.15pm P: Wednesday 23 January Celtic Park, 7.45pm R: Wednesday 30 January Excelsior Stadium, 7.45pm

Cowdenbeath v Rangers Friday 18 January Central Park, 7.45pm P: Wednesday 30 January Central Park, 7.45pm R: Wednesday 30 January Ibrox Stadium, 7.45pm

Dundee v Queen of the South Saturday 19 January Kilmac Stadium at Dens Park, 3pm P: Tuesday 29 January Kilmac Stadium at Dens Park, 7.45pm R: Tuesday 29 January Palmerston Park, 7.45pm

East Fife v Greenock Morton Saturday 19 January Locality Hub Bayview Stadium, 3pm P: Tuesday 22 January Locality Hub Bayview Stadium, 7.45pm R: Tuesday 22 January Cappielow Park, 7.45pm

Heart of Midlothian v Livingston Sunday 20 January Tynecastle Park, 2.30pm P: Wednesday 23 January Tynecastle Park, 7.45pm R: Wednesday 23 January Tony Macaroni Arena, 7.45pm

Hibernian v Elgin City Saturday 19 January Easter Road, 3pm P: Wednesday 30 January Easter Road, 7.45pm R: Wednesday 30 January Borough Briggs, 7.45pm

Inverness Caledonian Thistle v East Kilbride Saturday 19 January Tulloch Caledonian Stadium, 3pm P: Tuesday 29 January Tulloch Caledonian Stadium, 7.45pm R: Tuesday 29 January K Park, 7.45pm

Kilmarnock v Forfar Athletic Saturday 19 January Rugby Park, 3pm P: Tuesday 29 January Rugby Park, 7.45pm R: Tuesday 29 January Station Park, 7.45pm

Montrose v Dundee United Saturday 19 January Links Park, 3pm P: Tuesday 29 January Links Park, 7.45pm R: Tuesday 29 January Tannadice Park, 7.45pm

Motherwell v Ross County Saturday 19 January Fir Park Stadium, 3pm P: Wednesday 30 January Fir Park Stadium, 7.45pm R: Tuesday 29 January Global Energy Stadium, 7.45pm

Partick Thistle v Stranraer Saturday 19 January Energy Check Stadium at Firhill, 3pm P: Tuesday 22 January Energy Check Stadium at Firhill, 7.45pm R: Tuesday 22 January Stair Park, 7.45pm

Raith Rovers v Dunfermline Saturday 19 January Stark’s Park, 3pm P: Tuesday 22 January Stark’s Park, 7.45pm R: Tuesday 29 January East End Park, 7.45pm

St Johnstone v Hamilton Academical Saturday 19 January McDiarmid Park, 3pm P: Tuesday 22 January McDiarmid Park, 7.45pm R: Tuesday 29 January Hope CBD Stadium, 7.45pm

St Mirren v Alloa Athletic Saturday 19 January Simple Digital Arena, 3pm P: Wednesday 30 January Simple Digital Arena, 7.45pm R: Wednesday 30 January Indodrill Stadium, 7.45pm