When 21' 18.87 106.209mph is Tuesday August 24th what is Monday August 23rd?
create table table_26986076_5 (mon_23_aug varchar, tues_24_aug varchar, PRIMARY KEY (mon_23_aug))
select mon_23_aug from table_26986076_5 where tues_24_aug = "21' 18.87 106.209mph"