The Tower of the Winds in Athens included both a sundial and a water clock for telling time. A canonical sundial is one that indicates the canonical hours of liturgical acts, and these were used from the 7th …

Dec 22, 2025 · Sundial, the earliest type of timekeeping device, which indicates the time of day by the position of the shadow of some object exposed to the sun’s rays. As the day progresses, the sun …

This is a complete listing of sundials in the North American Sundial Society Registry. Click on any dial thumbnail picture or city name to display the full dial listing and images.

A sundial is a device that measures time by the position of the Sun. In common designs such as the horizontal sundial, the Sun casts a shadow from the gnomon, which is a thin rod straight edge, onto …

This set of pages explains, with diagrams, how a sundial works. It begins with the simplest (equatorial) dial where the shadow of a stick (the gnomon) falls on hour lines every 15 degrees apart, and then …

Learn what a sundial is, how it works, its invention, types, and uses. Discover easy diagrams and key facts for exams and projects.

The meaning of SUNDIAL is an instrument to show the time of day by the shadow of a gnomon on a usually horizontal plate or on a cylindrical surface.

Jul 28, 2025 · Our collection offers majestic sundials up to 6 feet in diameter, including the Armillary Sundial with Signs of the Zodiac, Armillary Sundial with Feathered Band, and Scalloped Ring …

Nov 2, 2024 · A sundial operates based on the Earth’s rotation and the sun’s movement across the sky. The most essential component of a sundial is the gnomon, a stick or triangular object that casts a …

Feb 19, 2024 · Building a sundial in your backyard may be an enjoyable and instructive hobby. Here is a tutorial to assist you in creating your own makeshift sundial: