The final abolition of the astronomical day
The problem of the astronomical day was eventually resolved as well. Its fate was effectively sealed in 1918, when the Council of the Royal Astronomical Society reported in favour of change, recommending that it should be introduced into the Nautical Almanac with effect from 1 January 1925. The strict meaning of Greenwich Mean Time changed with it, for up until then, it had been reckoned in terms of astronomical rather than civil time.