Online-Photoperiod Calculator

V 1.95 EN   Author: J. Lammi  ( © 1996 - 2009) jjlammie-mailyahoo.com
Lever et coucher du Soleil - Sonnenaufgang und Sonnenuntergang - Il sorgere e tramonto del Sole - Alba y ocaso del Sol

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
Daylight savings

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Calculation Date
Year  
Month   Day
Location
Latitude ° ´ N S   Find latitudes
Longitude ° ´ W E   Find longitudes
Local time h min TZ Timezones
Temperature oC Refraction

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Background photograph © J. Lammi 2009
Contacts: jjlammiyahoo.com



On Factors affecting Computation Accuracy

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Last modified on 20. 09. 2009 23:39:42
Time now: 11. 03. 2010 03:49:39