Have you ever wondered how people told time before the invention of the clock? It was through Sundial. They were created in several forms. But in all cases, there is one thing in common. Every Sundial has a surface known as the ‘gnomon’ It is inclined at an angle equal to the latitude of the place where the Sundial is located and it points towards the North. The shadow cast by the ‘gnomon’ on the dial tells the time of the day. The Sundial in the Golden temple has survived till the present day. It is located on bridge which joins the outer walkway (called ‘parkarma’) with the Sanctum Santorum. As one passes over the bridge, it is located on the left side, and is almost half way down the bridge. Given below are a couple of pictures of the instrument.