Hearts, one of only two unbeaten teams in the SPFL, are hot on the heels of champions Rangers at the top of the league as the season reaches it’s quarter-point.
Ross County, who travel to fellow strugglers Dundee, are still without a win.
All the Premiership games, including the mouth-watering encounter at Easter Road – Hibs v Celtic and Livingston’s home match with Dundee United, fall on Wednesday, but 24 hours earlier, there's a full card of cinch Championship fixtures with many a repeat of the opening day of the season.
There’s a Tuesday night derby in Ayrshire with Kilmarnock at Ayr and also in Fife with winless Dunfermline hosting Raith Rovers.
Here is the referee in charge of each match this midweek in the top two leagues of the SPFL.