question: What time was achieved on Saturday 29th August by the rider who recorded 23' 18.82 97.102mph on Tuesday 25th August?
answer: SELECT sat_29_aug FROM table_23465864_4 WHERE tues_25_aug = "23' 18.82 97.102mph"
context: CREATE TABLE table_23465864_4 (sat_29_aug VARCHAR, tues_25_aug VARCHAR)