Schedule is up here - https://www.wera.com/pdfs/eventschedule/cyclejam2021.pdf and pre entry is open.
so there will be 5 races both saturday and sunday for 1000cc? A SBK, A Superstock, F1, Open SS, WERA SBK? Or are the A/Open SS and A/WERA SBK combined?
It's in the class list under F for Friday Saturdays pre entry has closed but you can still do it under Sundays stuff.