I struck me as very odd that the Standard Time ellipse has much larger radii
than the smaller Daylight Saving Time ellipse, yet both ellipses use the
same dateline. (I was going to ask Roger Bailey and Fer about it). From my
limited knowledge of analemmatics, I think this design will not function
correctly because if you change the size of the ellipse, you must also
change the size of the dateline. This could explain why you've had
complaints about Daylight Savings markings.
Of course you're right in saying so. The bigger the ellipse, the bigger
the scale of dates... but
maybe they've neglected the (small?) mistake they make... Now the
question is: is this
mistake really neglectable (considering that a person is far from being
a vertical pole, that
his/her feet do not stand at the exact date, and so on...)? Maybe it is
so... But what about the EoT?
Does anybody in the list know (empirically or theoretically) something
else about this kind
of approximations?
(Fer, Roger, Helmut, Frans Maes, e tutti quanti...)
Best regards,
Anselmo
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