SunPosition

This tool calculates an array of solar angle data that can be copied into spreadsheets and other documents. Please read the important instructions, notes, and FAQ pages before using this tool. Click on any input label for additional details.


INPUTS
TIME BASIS
solar time     clock time     [what's the difference?]
DATA TO CALCULATE
altitude azimuth declination    
eq. of time hour angle day length
LOCATION
latitude  degrees  North  South
longitude
time zone
zero azimuth
DATA RESOLUTION
frequency start date
resolution time
OUTPUT FORMAT
delimiter date style
angle units time style
leap year include header
OUTPUT

Support SunPosition!

The development and maintenance of SunPosition is supported 100% by voluntary user donations. If you found this program helpful, please consider making a small donation...this can be done quickly and securely by credit card, or you can mail a check. Suggested donations are $25 for commercial use, and $10 for personal use. Please visit the Shareware page for details, or you can make a quick PayPal or credit card donation to the right. Thanks!

QUICK DONATION
Commercial ($25)
Personal ($10)

Mailing List

The author maintains a private mailing list of users of SunAngle and his other shareware solar design tools, and is happy to send you very occasional notices about software upgrades and other items of interest. Such notices do not occur more frequently than a few times a year.

If you're interested in joining the SunAngle mailing list, please send e-mail to the author with this request. Your e-mail address will never be used for commercial purposes or given to anyone else for any reason.