Online-Photoperiod Calculator V1.97L   Author: J. Lammi  (© 1996 - 2008)
Computation of Daylengths, Sunrise/Sunset Times, Twilight and Local Noon
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Select for dates
Use the current date
Input a date value		 Select for locations
Use menu of cities
Input latitude & longitude		 Daylight savings

Set ON/OFF
Calculation Date
Location
Latitude ° ´ N S   Find latitudes
Longitude ° ´ W E   Find longitudes
Local time h min TZ Find timezones
Temperature oC Refraction

This is the fail-safe version which has no cookies to restore your location parameters while loading.

Midnite sun pictures (June 2001)

Contacts: yahoo

On the Factors affecting Computation Accuracy

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Go Geocaching!