Hampden Park will host both Scottish League Cup semi-finals early in 2015, the Scottish Professional Football League has announced.
Celtic and Rangers go head-to-head on Sunday 1 February, with kick-off at 13:30 GMT, a match to be shown live on BBC Scotland and the BBC Sport website.
Dundee United take on Aberdeen the day before, with kick-off at 15:00 GMT.
BBC Radio Scotland will provide live coverage of both ties from the national stadium.
Hampden will be hosting its first major football matches following its use as an athletics venue during the Commonwealth Games.
SPFL chief executive Neil Doncaster said: "We hope supporters of all four clubs enjoy two memorable occasions."
Organisers say that about 34,000 tickets for each semi-final will be available at £25 for adults and £10 for under-16s in the North, East and West Stands, while South Stands tickets are priced at £30 and £35.
Tickets for wheelchair users are £10-£20 for adults and £5 for juveniles.
The 69th League Cup final will be played on Sunday 15 March.