Here is the equation of time cam:
http://www.longnow.org/10kclock/clkIdeas/dannyhillis/Rolfe1_00/
EqOfTimeDtl1_00Lo.jpg
from the millennium clock:
http://www.longnow.org/10kclock/clkIdeas/dannyhillis/Rolfe1_00/
ClockAllWht1_00Lo.jpg
an interesting - and non-astronomical - example of a clock that cares
about solar time.
Rob Seaman
National Optical Astronomy Observatory
