The 2017 calendar has been announced for the 2017 season and the Knockhill round is scheduled for August 12th / 13th.
“With the BTCC’s enormous and ever-increasing popularity, this format has continually proven to be a real winner,” said Series Director Alan Gow.
“It provides our teams, partners, venues, huge TV audience and of course our hundreds of thousands of fans with a consistent and proven calendar that always delivers a great championship”.
“We have defined our 2017 calendar as early as possible with this unprecedented mid-June announcement to help other UK motor sport events in reducing the amount of clashes that can inevitably occur”.
http://www.btcc.net/2016/06/14/2017-dunlop-msa-british-touring-car-championship-calendar-announced/