NavList:

I have recently (re-)joined this list and have not seen the original
question but I believe that it is answered in detail in Jean Meeus,
_Mathematical Astronomy Morsels III_ (Willmann-Bell, Richmond, 2004),
pp. 332-338.

Neglecting atmospheric refraction, solar parallax and the Sun's finite
diameter, the maximum length of sunlight is received at the North Pole
(268 426 minutes).

However, when you add the corrections neglected above the length of
sunlight at the pole increases to 274 525 minutes. More surprisingly,
the region near the polar circle experience even longer lengths of
sunlight - at 66.8 degrees a maximum value of about 278 924 minutes.

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* Robert H. van Gent                                  *
* E-mail: r.h.vangent@astro.uu.nl                *
* Homepage: http://www.phys.uu.nl/~vgent/ *
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