Part of the Operating systems glossary: Mac OS is the computer operating system for Apple Computer's Macintosh line of personal computers and workstations. A popular feature of its latest version, Mac OS X, is a desktop interface with some 3-D appearance characteristics.
The Preakness Stakes is an American flat thoroughbred horse race held on the third Saturday in May each year at Pimlico Race Course in Baltimore, Maryland. It is a Grade I race run over a distance of 9.5 furlongs (13â16 miles (1,900 m)) on dirt.
The date of each event is now set by the Kentucky Derby, which is always held on the first Saturday in May. The Preakness Stakes is currently held two weeks later; and the Belmont Stakes is held three weeks after the Preakness (five weeks after the Derby). The earliest possible date for the Derby is May 1, and the latest is May 7; the earliest possible date for the Belmont is thus June 5, and the latest is June 11.