The opening ceremony of the 2004 Summer Olympics was held on August 13, 2004 starting at 20:45 EEST (UTC+3) at the Olympic Stadium in Marousi, Greece, a suburb of Athens. As mandated by the Olympic Charter, the proceedings combined the formal and ceremonial opening of this international sporting event, including welcoming speeches, hoisting of the flags and the parade of athletes, with an artistic spectacle to showcase the host nation's culture and history. 72,000 spectators attended the event, with approximately 15,000 athletes from 202 countries participating in the ceremony as well. It marked the first-ever international broadcast of high-definition television, undertaken by the U.S. broadcaster NBC and the Japanese broadcaster NHK.
The Games were officially opened by President of the Hellenic Republic Konstantinos Stephanopoulos at 23:46 EEST (UTC+3).
The Olympic flame at the Opening Ceremony. The concept was the work of choreographer and director Dimitris Papaioannou, a modern dance artist.