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widgetwheeltick 14 937 257

 

the dial reads
 

local apparent solar time: where the true sun stands

the clock at the dial
 
the gap
 

the equation of time, plus summer time; the clock at 90° W keeps this very meridian

the sun
 
the shadow
 

    The sun, moon, stars and weather: the one sky at 45° N 90° W (M4). Hour lines for 45° N: tan θ = sin φ · tan H.

    the digital sundial

    day
    22
    complete
    in
    19:00:20.949

    what grew today

    seal 7a0c…40a6page 27 of 36 525