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