Under racing rules, every thoroughbred in the Northern Hemisphere has this birthday
[DOC] [TLE] About Thoroughbreds | Keeneland Thoroughbred Racing and Sales [PAR] Thoroughbred racing has a colorful and storied past, having been introduced in 
the ... All Thoroughbreds in the Northern Hemisphere celebrate their birthday on
... [DOC] [TLE] Thoroughbred - Wikipedia [PAR] The Thoroughbred is a horse breed best known for its use in horse racing.