September 22, 2009 – the Autumnal Equinox. As the hour of twilight moves across the globe, seven of the world's most picturesque locations will host seven football matches, and your five-a-side football team - seven players, including two substitutes - could be lining up for one of those games, atop a glacier in the French Alps.
These incredible matches are to celebrate the launch of a new range of Sony cameras, which use cutting-edge digital imaging technology to produce high quality pictures, even in low light. There's no better way to put them to the test than capturing the world's most beautiful game, at its most exotic locations, at twilight.
Simply drag the pictures of five famous football stadiums onto the continent where you think they can be found and click on the Submit button.
You and your teammates must all be over 18 to enter and it is also worth bearing in mind the physical challenge of playing in a competitive football match at high altitude.