Building Sundials

Create your own sundial with MATLAB.


Updated 1 Sep 2016

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If carefully built, a sundial is perfectly capable of keeping accurate time. The problem is that you need a different sundial for every combination of latitude, longitude, and day of the year. Fortunately MATLAB® can make this a manageable problem. By turning this procedure around, you can also use MATLAB to tell you which way is north.

The algorithms used here for MATLAB sundial creation were adapted from

Cite As

Ned Gulley (2023). Building Sundials (, MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R14
Compatible with any release
Platform Compatibility
Windows macOS Linux

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Version Published Release Notes

Updated license

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