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Solar Position: 1/2 Hourly

This version of the Square One JavaScript Solar Position Calculator calculates solar position values for each 1/2 hour over the selected day of the year. The data is displayed in the text editor at the bottom, allowing you to copy/paste it to wherever you need it.

Your first step in the use of this tool is to set the Latitude and Longitude of the desired location - making sure to first set the TimeZone value as this will make entering the longitude easier. In addition to the 1/2 hourly Sun positions throughout the day, it also calculates Sunrise / Sunset times, the Declination and theEquation of Time. Select the Calculate button to perform the calculation and populate the list.

Javascript Solar Position Calculator II

INPUT PARAMETERS
Latitude:  °
Longitude: °
Time Zone:
Required Date:
 
 
OUTPUT RESULTS

Useful References

Other Solar Position Calculators
http://www.cs.ucla.edu/~simonw/sunpos/
http://susdesign.com/sunangle/
NASA Information on Sundials
http://liftoff.msfc.nasa.gov/academy/earth/sundial/sundial.html
Solar Position: Calculator
Acoustic Design

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