On Sat, Jan 18, 2014 at 11:14 PM, David J Taylor < david-tay...@blueyonder.co.uk> wrote:
> > Are you perhaps thinking of sidereal time, Chris? > > > Either way, the difference is within the limits of the basic tin wind-up alarm clock. A quality wrist watch would not work because it is to good and harder to adjust. Something like this: Westclox-15396-Ardmore-Twin-Bell<http://www.amazon.com/Westclox-15396-Ardmore-Twin-Bell/dp/B0000V0DEW/ref=pd_sim_hg_1> Now if the OP wants to track apparent solar time to better then a few seconds per month, then it gets real hard if you have to do it with springs, pendulums and gears because the clock needs to track the date. I think you might need some kind of of non-round cam that revolves once per year. But if you are willing to set the clock about once a week a cheap wind-up clock would be good enough to tell visually you when the sun is at local noon to within a minute or so. -- Chris Albertson Redondo Beach, California _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.