High Quality Content by WIKIPEDIA articles! The 2004-05 World Thoroughbred Racehorse Rankings is the 2004-05 edition of the World Thoroughbred Racehorse Rankings. It is an assessment of racehorses which was issued by the International Federation of Horseracing Authorities (IFHA) in August 2005. It includes horses aged three or older which raced or were trained during 2004-05 in countries where the flat racing year runs from August 1 to July 31 (and also South America, where it runs from July 1 to June 30). These countries are generally in the Southern Hemisphere, although some areas covered, such as Hong Kong and the United Arab Emirates, are actually north of the equator.