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In the Earth’s northern hemisphere, the shadow on a sundial always moves from left to right due to the sun’s movement. People learned to tell time by observing this shadow.
Had the first mechanical clocks been made in the southern hemisphere, the hands might have turned the opposite way. (AI Generated Image)
In today’s fast-paced life, time has become extremely precious. Whether we are heading to work, traveling, or meeting someone, we are constantly watching the clock. Have you ever wondered why the hands of the clock always move from left to right, or ‘clockwise’? This isn’t a mere coincidence but rather a reflection of historical and geographical factors.
Clocks are now essential in our daily lives. Many people struggle to complete their tasks on time without a clock. Checking the time to stay on schedule has become a habit. Hence, every household has a wall clock, and many people also wear watches. To understand why clocks move the way they do, we need to look back hundreds of years.
Before mechanical clocks existed, people used the sun to tell time, relying on the shadow cast by the sun’s light. They used a ‘sundial’ for this purpose. As the sun moved across the sky, the shadow of a stick in the centre of the sundial moved in a specific direction, indicating the time.
In the Earth’s northern hemisphere, the shadow on a sundial always moves from left to right due to the sun’s movement. People learned to tell time by observing this shadow. This natural movement became the basis for the clockwise direction of modern clocks. For centuries, people in the northern hemisphere followed this pattern.
The first mechanical clocks were created in Europe between the 12th and 15th centuries. When deciding the direction of the clock hands, inventors considered the long-standing habit of reading sundials. To respect this tradition, engineers designed clock hands to move in the same direction as the sun’s shadow.
The inventions of Greek scientists and ancient customs influenced the direction of the clock hands to match the sundial shadow. Had the first mechanical clocks been made in the southern hemisphere, the hands might have turned the opposite way. The geographical conditions of that time continue to influence the direction of clocks even in the digital age.
February 20, 2026, 17:59 IST
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