In what could be a mass public "lights out" every household in Britain will be asked to turn out lights at that time to mark the centenary and replace them with a single light.
In Reading I will be asking if our street lights can be turned off or dimmed for a short period.
Similarly businesses, particularly in the town centre, will be asked to join in at 11pm.
Note: Germany had declared war on France and invaded Belgium on August 3 1914. That evening, Sir Edward Grey gazed across St James's Park from his window at the Foreign Office as the lamps were being lit on the Mall. He turned to a friend, John Spender, and made his now famous remark "the lamps are going out all over Europe".