Sundials
= Sundials
{wiki=Sundials}
Sundials are ancient timekeeping devices that use the position of the sun's shadow to indicate the time of day. They consist of a flat plate or surface (the dial) and a gnomon, which is a stick or a triangular blade that is fixed at a specific angle, usually aligned with the Earth’s rotational axis. As the sun moves across the sky, the gnomon's shadow moves along the surface of the dial.