The Irish FA have announced the dates of the promotion/relegation play-off tie to be played over two legs in May.
Newry City will meet the team that finishes second from bottom in the Premiership table.
The first leg will be played on Tuesday 1 May, with the return game taking place on 4 May.
Lisburn Distillery are currently second bottom but Glenavon and Dungannon could also end up in the play-off after this weekend's final series of games.
Should Lisburn Distillery be involved in the play-off, then the first game will be played at New Grosvenor, but otherwise the first leg will be staged at the Newry Showgrounds.
Both play-off legs will kick-off at 19:45 BST.
With only one weekend remaining in the Premiership, all three teams will feel they have must-win games.
Swifts are best placed now with 34 points but must travel to their opponents Glenavon for a potential decider.
Glenavon go into this weekend on 33 points.
Lisburn Distillery, on 32 points, have home advantage against Ballymena on Saturday but Ballymena sit seventh with only one loss in their last ten games.
In the same period Distillery have won only twice.