BONSERNEWS.com – Time is one of the most mysterious concepts that surrounds our life. When we travel the world, we cannot avoid the time differences that exist in every place we visit.
This phenomenon is caused by differences in geographical location and the use of different time zones in various regions of the world.
Of course, we often wonder, why can there be a time difference?
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How can there be a difference in hours between countries that are close together?
Here’s the explanation, according to a study sourced from the United States Naval Observatory. (n.d.). What is Coordinated Universal Time.
Why Are There Time Differences in Different Parts of the World on Earth? It turns out that these are the influencing factors!
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Apparently the answer lies in the system of time measurement used by humans and the way the earth rotates around its axis.
First, let’s discuss the system of measuring time. Humans use a time system known as standard time or universal coordination time known as Coordinated Universal Time (UTC).
UTC uses atomic time as a reference and is adopted worldwide. However, for practical daily needs, each country or region usually uses a time zone that is determined based on its geographical location.
For example, some countries use the Greenwich Standard Time Zone (GMT), while others use a time zone set based on the time difference with GMT.
The time difference is also affected by the Earth’s rotation. Earth rotates around its axis in 24 hours, which results in day and night cycles.
However, this motion is not uniform, and there are small variations in the Earth’s rotational speed over time.