The fixture information for this weekend's William Hill Scottish Cup Fourth Round has been confirmed; this includes information regarding the date, time and venue in the event of a postponement or a tie going to a replay.

You can also find the information here.

Fixture Original Fixture Postponement Replay
Aberdeen v Dumbarton Saturday 18 January, 3pm – Pittodrie Stadium Wednesday 29 January, 7.45pm – Pittodrie Stadium Wednesday 29 January, 7.45pm – C&G Systems Stadium
Alloa Athletic v Inverness Caledonian Thistle Saturday 18 January, 3pm – Indodrill Stadium Tuesday 21 January, 7.45pm – Indodrill Stadium Tuesday 28 January, 7.45pm – Tulloch Caledonian Stadium
Arbroath v Falkirk Saturday 18 January, 3pm – Gayfield Park Wednesday 22 January, 7.45pm – Gayfield Park Tuesday 28 January, 7.45pm – Falkirk Stadium
Ayr United v Ross County Saturday 18 January, 3pm – Somerset Park Tuesday 28 January, 7.45pm – Somerset Park Tuesday 28 January, 7.45pm – Victoria Park
Bonnyrigg Rose Athletic v Clyde Saturday 18 January, 3pm – New Dundas Park Tuesday 21 January, 7.45pm – New Dundas Park Tuesday 21 January, 7.45pm – Broadwood Stadium
Dundee United v Hibernian Sunday 19 January, 3pm – Tannadice Park Tuesday 28 January, 7.45pm – Tannadice Park Tuesday 28 January, 7.45pm – Easter Road
Dundee v Motherwell Saturday 18 January, 7.20pm – Kilmac Stadium at Dens Park Tuesday 28 January, 7.45pm – Kilmac Stadium at Dens Park Tuesday 28 January, 7.45pm – Fir Park
East Kilbride v BSC Glasgow Saturday 18 January, 3pm – K Park Wednesday 29 January, 7.45pm – K Park Wednesday 22 January, 7.45pm – 7.45pm
Hamilton Academical v Edinburgh City Saturday 18 January, 3pm – Fountain of Youth Stadium Tuesday, 28 January, 7.45pm – Fountain of Youth Stadium Tuesday 28 January, 7.45pm – Ainslie Park
Heart of Midlothian v Airdrieonians Saturday 18 January, 3pm – Tynecastle Park Wednesday 29 January, 7.45pm – Tynecastle Park Wednesday, 29 January, 7.45pm – Penny Cars Stadium
Kilmarnock v Queen's Park Saturday 18 January, 3pm – Rugby Park Tuesday 28 January, 7.45pm – Rugby Park Tuesday 28 January, 7.45pm – Hampden Park
Livingston v Raith Rovers Saturday 18 January, 3pm – Tony Macaroni Arena Tuesday 28 January, 7.45pm – Tony Macaroni Arena Tuesday 28 January, 7.45pm – Stark's Park
Partick Thistle v Celtic Saturday 18 January, 5.30pm – Firhill Stadium Tuesday 28 January, 7.45pm – Firhill Stadium Tuesday 28 January, 7.45pm – Celtic Park
Rangers v Stranraer Friday 17 January, 7.45pm – Ibrox Stadium Wednesday 29 January, 7.45pm – Ibrox Stadium Wednesday 29 January, 7.45pm – Stair Park
St Johnstone v Greenock Morton Saturday 18 January, 3pm – McDiarmid Park Wednesday 22 January, 7.45pm – McDiarmid Park Wednesday 22 January, 7.45pm – Cappielow Park
St Mirren v Broxburn Athletic Saturday 18 January, 3pm – St Mirren Park Wednesday 29 January, 7.45pm – St Mirren Park Wednesday 29 January, 7.45pm – Tony Macaroni Arena