Bells herald start of Olympics July 27, 2012 by Fulcrum THOUSANDS of bells will ring out across the nation at 8.12 this morning to mark the opening of the Olympic Games. They will include Big Ben, striking from 8.12 until 8.15 as part of "All the Bells". Madeleine Davies. Church Times. 26 July 2012 FulcrumShareTweetShare