[time-nuts] XKCD on time :)

jimlux jimlux at earthlink.net
Fri Sep 28 10:04:49 EDT 2018


On 9/28/18 6:16 AM, Eric Scace wrote:
> Which, if I recall correctly, was the system used in Japan immediately before the adoption of Western time methods. Each day’s interval between sunrise-sunset was divided into a six units… so, in comparison with an absolute scale, the absolute duration of each unit of time varied from day to day and location to location.
> 
> More details here <https://en.wikipedia.org/wiki/Japanese_clock>.
> 

and in the Middle East, as well - There were even fancy watches made 
that automatically compensated given the date, so sunrise is at 6, 
midday at noon and sunset at 6.


I wrote some software to drive a 3325 via GPIB which in turn drove a 
battery wall clock to do this (that project started out as a "mars time" 
clock..)  Kind of a waste of time (is such a thing possible on 
time-nuts?) but it was an interesting problem to take a "tick per 
second" analog indicator and turn it into what is essentially an 
"arbitrary rate clock".  You could also use it to make a "where is the 
mooon or mars" indicator.





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