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A geolocator is a miniature light-recording device that allows the determination of sunset and sunrise times. Using standard astronomical algorithms, approximate latitude (1 deg) can then be estimated from day length, and approximate longitude ( 1 deg) from the time of local noon relative to GMT.
A geolocator is a miniature light-recording device that allows the determination of sunset and sunrise times. Using standard astronomical algorithms, approximate latitude (1 deg) can then be estimated from day length, and approximate longitude ( 1 deg) from the time of local noon relative to GMT.

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