The IFA's Challenge Cup Committee has announced the venues and kick-off times for this year's Irish Cup semi-finals on Saturday, 6 April.
Glentoran will play Portadown in the first of the last-four matches at Windsor Park at 12:30 BST.
Cliftonville will then face Crusaders or Lisburn Distillery at the The Oval at 16:30.
The Crues and the Whites play their fourth round replay at New Grosvenor on Tuesday night.
The Irish Cup final will take place on Saturday, 4 May.