NATIONAL GROUP 1 1 B-Spec,STL,STU,T4/GTL,HP SATURDAY SUNDAY GROUP 2 Formula/P1-2 SATURDAY SUNDAY GROUP 3 AS/GT1-3 SATURDAY SUNDAY GROUP 4 SRF SATURDAY SUNDAY GROUP 5 SM SATURDAY SUNDAY GROUP 6 T1-3/ EP,FP SATURDAY SUNDAY GROUP 7 FV/FF/F500 SATURDAY SUNDAY