Kick off is 4.30pm SA time.
The game was originally scheduled for Saturday, but Pirates were informed on Tuesday that the match in Libreville had been moved forward.
The Buccaneers are expected back in South Africa on Wednesday morning and will play the University of Pretoria in an Absa Premiership match at Orlando Stadium on Friday April 24. Kick off for that game is 8pm.
Pirates coach Eric Tinkler, meanwhile, has confirmed that goalkeeper Brighton Mhlongo will be available for the game in Libreville, after dislocating his finger against Platinum Stars last week.
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