When 20' 58.50 107.929mph is Friday August 27th What is Tuesday 24th August?
CREATE TABLE "2010_lightweight_manx_grand_prix_practic" (
  "rank" real,
  "rider" text,
  "sat_21_aug" text,
  "mon_23_aug" text,
  "tues_24_aug" text,
  "wed_25_aug" text,
  "thurs_26_aug" text,
  "fri_27_aug" text,
  "sat_29_aug" text
);
SELECT "tues_24_aug" FROM "2010_lightweight_manx_grand_prix_practic" WHERE "fri_27_aug"='20'' 58.50 107.929mph';