Motherwell's clashes against Rangers and Celtic have been moved to Sunday fixtures to accommodate the Glasgow giants' involvement in the Europa League.
Games against Steven Gerrard's men in September and October have been affected, as well as a trip to Celtic Park in December.
The first game, against Rangers at Ibrox, has been moved from Saturday, September 18 to Sunday, September 19, at 3pm.
Similarly, Motherwell will now clash with Rangers at Fir Park on Sunday, October 31, with a 12pm kick-off to accommodate Sky Sports coverage.
European involvement by Celtic means their clash at home to Motherwell now takes place on Sunday, December 12, with a 3pm kick-off.
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