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.
Finally, on race day, it's riders up! when all the televised action takes place from Pimlico on NBC beginning at 4:30 PM ET on Saturday, May 20, 2017 with post time approx, 6:20 PM ET. â¢ The Preakness is named after the horse who won the first stakes ever run in Pimlico when its doors first opened on May 27, 1873.