What time was achieved on Saturday 29th August by the rider who recorded 23' 18.82 97.102mph on Tuesday 25th August?
create table table_23465864_4 (sat_29_aug varchar, tues_25_aug varchar, PRIMARY KEY (sat_29_aug))
select sat_29_aug from table_23465864_4 where tues_25_aug = "23' 18.82 97.102mph"