The Sun API > Introduction

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Introduction
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Solar and Sundial Calculation Freeware Program

A practical, highly accurate way to calculate key Solar values for:

designing sundials,
doing solar architecture design and for
annual almanac calculations
calculating ephemerides

The Sun API works equally conveniently for:

Visual Basic
DeltaCAD
Microsoft Excel Worksheets.
All other compiled and interpreted computer languages that can call functions in .dll files.

The Sun API is based on degrees rather than radians for its basic measurements.

The Sun API has at its core a .dll file which makes many sun related functions available to
programs on your computer.