The time is set the same for everyone in a given zone, and it differs by one hour in each zone. The world is divided into 24 slices of 15 degrees with multiple time zones, and the zones' clocks are set differently. What is the purpose of having different time zones? A time zone observes a standard time for legal, commercial, and social purposes. Since areas in close contact need to keep the same time, they tend to follow the boundaries of countries and the subdivisions of those countries and not strictly follow longitude. Historically, sundials and water clocks were the earliest timekeeping devices.įor legal, commercial, and social purposes, a time zone is an area on the globe that observes a standard time. Several instruments measured time before clocks were invented, including observing the Sun's meridian at noon. The expansion of transport and communication during the 19th century created a need for a unified timekeeping system, and time zones were introduced. We must first understand the concept of time zones before understanding their purpose. Coordinated Universal Time came into existence due to the close coordination between the world's time scales, hence the name. Universal Time Coordinates is the standard time used globally. On the other hand, Coordinated Universal Time represents the 24-hour standard used today as the basis for civil time. At present, Tai is 37 seconds ahead of UTC, and Tai is also 19 seconds ahead of GPS. It specifies how fast our clock should run.Ī continuous SI second is the basis for the international atomic time scale. TAI denoted Temps Atomique International, an essential component of Coordinated Universal Time (UTC), a time scale used to define local time globally. What is the advantage and disadvantage of the time zone? Since the local times would be determined by the sunrise or sunset locally, which would be based on the sun rather than time zones, you would be more connected to circadian rhythms, explains Hanke. However, business hours would vary between locations, even if the clocks are all set simultaneously. What would be different if the world had no timezones?Īs an alternative to strictly adhering to a specific time zone, Hanke proposes that different locations should be able to adjust their working hours and schedules.
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