This live stream is at the London Olympic Stadium for the opening ceremony:
A countdown clock in Trafalgar Square was unveiled, 500 days before the games. The same location hosted one of a number of events to mark a year before the games. Final countdown to the start of this year's summer games in London has begun with the ceremony of lighting of Olympic flame in Ancient Olympia in Greece. The official mascots for the 2012 Summer Olympic and Paralympic Games were unveiled on 19 May 2010; this marks the second time (after Vancouver) that both Olympic and Paralympic mascots were unveiled at the same time. Wenlock and Mandeville are animations depicting two drops of steel from a steelworks in Bolton. They are named Wenlock, after the Shropshire town of Much Wenlock, which held a forerunner of the current Olympic Games, and Mandeville, after Stoke Mandeville, a village in Buckinghamshire where a forerunner to the Paralympic Games were first held.
During the Parade of Nations portion of the 2012 Summer Olympics opening ceremony – scheduled to take place in London, England, United Kingdom, on 27 July 2012 – athletes from each country participating in the Olympics will parade in the Olympic Stadium, preceded by their flag. The flag will be borne by a sportsperson or official from that country chosen either by the National Olympic Committee or by the athletes themselves to represent their country.
Per tradition, the national team of Greece will enter first, as the progenitor of the Olympic Games, and the host country – in this case Great Britain (as the United Kingdom is known at the Olympic Games) – will march into the stadium last. All other countries will enter the stadium in name order in the language of the host country, which in this case is the English language.