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Calculates solar angles based on location, date, and time. It's useful in passive solar building design, PV and solar thermal system design and analysis, and other applications such as photography.
Screen Shots
Keywords
Solar, sun, angle
Validation/Testing
N/A
Expertise Required
None required.
Users
Several hundred regular users, split approximately evenly between U.S. and other countries.
Audience
Architects, energy analysts, home owners.
Input
Location, date, time, time zone.
Output
Declination, equation of time, local solar time, hour angle, solar altitude, solar azimuth, time of sunrise and sunset.
Computer Platform
Web
Programming Language
JavaScript
Strengths
Great for determining instantaneous sun angles. Good educational background material.
Weaknesses
Can't output tabular data for multiple dates/times.
Contact
Availability
Available at http://www.susdesign.com/sunangle, distributed as shareware ($10 for personal users, $25 for commercial users).
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