Sundials

some of my sundials

    A meridian sundial indicates solar noon, which occurs when the sun reaches its highest elevation of the day, passing through true South and the local meridian.  The idea can be extended to create a sundial that indicates local civil noon.  Noon when daylight savings time is in effect can also be indicated.  Click here to view a meridian sundial I made that has these features and to see some of my other sundials : Picture Gallery Of My Sundials.

analemmatic sundial

    An analemmatic sundial is a horizontal sundial with a gnomon located at a date-dependent position.  The gnomon is often a person who stands at a date mark and reads the time by sighting in the direction of his or her shadow.  Click here to read my tutorial about designing analemmatic sundials: Analemmatic Sundial Tutorial.

St. Louis Sundial Trail

    For a map of the St. Louis, MO, region that is annotated by a trail showing the location of sundials, click here.

Equation of Time

    For my Android cell-phone application that calculates and displays the Equation of Time, click here.

Polyhedral Sundials

    For my article about polyhedral sundials, click here.

Sundial Design Considerations

    For my article about sundial design, click here.

Display EOT App(lication) for Android Platforms

    For my article about sundial design, click here.