when is the derby
The Derby Stakes, popularly known as The Derby, is a Group 1 flat horse race in England open to three-year-old thoroughbred colts and fillies. It is run at Epsom Downs Racecourse in Surrey over a distance of one mile, four furlongs and 10 yards (2,423 metres), on the first Saturday of June each year. It is Britain's richest horse race, and the most prestigious of the five Classics.