SYNCOM 3, The First Geostationary Communication Satellite, Is Launched

On August 19, 1964 the first geostationary communication satellite, Syncom 3, was launched by NASA with a Delta D #25 launch vehicle from Cape Canaveral.

"The satellite, in orbit near the International Date Line, was used to telecast the 1964 Summer Olympics in Tokyo to the United States. It was the first television program to cross the Pacific ocean" (Wikipedia article on Syncom, accessed 05-24-2009).