The AHL playoff schedule has been announced:
https://theahl.com/2023-calder-cup-playoff-schedules
In the Pacific Division, all 3 first round series start on Wednesday, with Game 2 on Friday. Game 3s (if required) will happen on either Saturday or Sunday. All games in the best-of-3 series will be played in the home arena of the higher-ranked team, but the lower-ranked team will be the "home" team in game 2 for the purpose of line changes.
Based on the second round schedules that have been set, I'd expect the Wranglers postseason to start on either the 27th or 28th at the Saddledome.