For photo contest " what time is it " The other photo was done in path of rapidly approaching lightning storm.
A sundial is a device that uses the position of the sun to tell time. It typically consists of a flat or curved surface with markings representing hours or minutes and a raised piece called a gnomon that casts a shadow on the surface.
A sundial works by using the position of the sun to cast a shadow on its surface. As the sun moves across the sky, the shadow moves with it, indicating the time based on the position of the shadow on the hour markings.
On a sunny day, a sundial will have a clear, defined shadow cast by the gnomon onto the surface. The markings on the surface will be visible and can be used to tell the time based on the position of the shadow.
While sundials are not as commonly used as they once were, they can still be found in some public spaces and gardens as decorative pieces. They are also used by some people as a hobby or as a way to teach about the concept of time and the movement of the sun.
The accuracy of a sundial depends on the design and placement of the gnomon, as well as the location and time of year. Some sundials can be accurate to within a few minutes, while others may have a larger margin of error. Generally, sundials are less accurate on cloudy or overcast days.