Greenwich Mean Time subsection 23(3), the same rule applies to deeds and other instruments. During the experiment of 1968-1971, when the British Isles did not revert to Greenwich Mean Time during the winter, the all-year British Summer Time was called British Standard Time (BST). In the UK, UTC+0 is disseminated to the general public in winter and UTC+1 in summer. BBC radio stations broadcast the "six pips" of the Greenwich Time Signal. It is named from its original generation at the Royal Greenwich Observatory, is aligned to Coordinated Universal Time, and called either Greenwich Mean Time or British Summer Time as appropriate for
Greenwich Time Signal pips were of equal length and confusion arose as to which was the final pip, hence the last pip was of extended length. The pips are available to BBC radio stations every 15 minutes but except in rare cases, they are only broadcast on the hour, usually before news bulletins or news programmes. On BBC Radio 4, the pips are broadcast every hour except at 18:00 and 00:00 and at 22:00 on Sundays (at the start of the Westminster Hour) when they are replaced by the Westminster chimes of Big Ben at the Palace of Westminster. No time signal is