Britain first adopted William Willett's Daylight Saving Time scheme in 1916, a few weeks after Germany. For years, the British Government had refused to introduce Daylight Saving Time, but by then, Britain and Germany were fighting each other in the First World War (1914-18), in order to promote greater efficiency in the use of the daylight hours. The Summer Time Act of 1916 was quickly passed by Parliament and the first day of British Summer Time, 21 May 1916, was widely reported in the press.