Sun Clock

Our activities is usually related to sun's positions. So, we start working when the sun has risen, and should stop working after sunset or before. But, we use clock that it's time is always vary according to sun position. Sometimes, on certain date at certain marking number of time, it seems too early compared to sun's position, but on another date, the same marking number of time seems too late compared to sun's position. Using this clock, 6 am is always when sun has just been risen, 12 noon is always when sun is exactly above head, 6 pm is always when sun has just been set, and 12 midnight is always at the middle between sunset and sunrise. So, by using this clock as the marking of time, we will be more synchronous with nature.