CREATE TABLE table_26986076_5 (mon_23_aug VARCHAR, rider VARCHAR)

When tom snow 250cc honda is the rider what is Monday August 23rd?
SELECT mon_23_aug FROM table_26986076_5 WHERE rider = "Tom Snow 250cc Honda"
SELECT "mon_23_aug" FROM "table_26986076_5" WHERE "Tom Snow 250cc Honda" = "rider"