In message <[email protected]>, Warner Losh write
s:
>Both are approximations of the "well, you should only hunt when
>it is light enough" and nobody carries around tables of times and
>everybody generally agrees when it is dusk or dawn.
In Denmark we actually have a several centuries old legal definition
of dusk and dawn, promulgated by none other than Astronomer Ole Römer:
Civil twilight: Sun less than 6 degrees under the horizon
Nautical twilight: Sun less than 12 degrees under the horizon
Astronomical twilight: Sun less than 18 degrees under the horizon
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
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Never attribute to malice what can adequately be explained by incompetence.
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