NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: clock synchronization
From: Robin Birch
Date: 2004 Feb 5, 21:32 +0000
From: Robin Birch
Date: 2004 Feb 5, 21:32 +0000
You live and learn. Loved your last post as it contained all of the bits I really didn't know and was very informative :-) Cheers Robin In message, George Huxtable writes >Robin Birch said, regarding Greenwich observatory- > > >>Originally they indicated 12:00 by dropping a signal ball on a post on the >>roof (it's still there and I believe they still do this). This was visible >>from most of the anchorages in the Thames until you got to Tower Bridge and >>so ships could set their clocks to 12:00. > >Not "originally": The observatory had been going for about 150 years before >the time-ball was instituted in 1833. And not at 12:00, but at 1 pm GMT, to >allow navigators to do their normal noonday business beforehand. > >George. > >================================================================ >contact George Huxtable by email at george@huxtable.u-net.com, by phone at >01865 820222 (from outside UK, +44 1865 820222), or by mail at 1 Sandy >Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK. >================================================================ -- Robin Birch