Untitled - UTC PDF

[PDF] Untitled - UTC

A Standard, Not A Time Zone

UTC is the time standard commonly used across the world. The world's timing centers have agreed to keep their time scales closely synchronized - or coordinated - therefore the name Coordinated Universal Time.

Atomic and Solar Time

Two components are used to determine UTC: 1. International Atomic Time (TAI): A time scale that combines the output of some 400 highly precise atomic clocksworldwide, and provides the exact speed for our clocks to tick. 2. Universal Time (UT1): Also known as astronomical time or solar time, it refers to the Earth's rotation. It is used to compare t...

UT Started in 1884

Universal Time (UT) was created at the International Meridian Conference in 1884. This is the basis for the 24-hour time zone system we know today. At the time, Greenwich Mean Time (GMT) was chosen as the world’s time standard. The reference line or starting point, the Prime Meridian, was determined to be the transit circle at the Royal Observatory...

from GMT to UTC

In 1960, the International Radio Consultative Committee formalized the concept of UTC, and it was put into practice the year after. The name Coordinated Universal Time was officially adopted in 1967. Why UTC – not CUT or TUC? UTC was adjusted several times until 1972, when leap secondswere introduced to keep UTC in line with the Earth's rotation, w...

View PDF Document

What time zone is UTC?

UTC is 5 hours ahead of the time in New York when New York is on standard time, and 4 hours ahead of the time in New York when New York is on daylight saving time. UTC does not change between summer time and winter time. The IANA time zone identifier for UTC is UTC.

What is Universal Time (UT1)?

Universal Time (UT1): Also known as astronomical time or solar time, it refers to the Earth's rotation. It is used to compare the pace provided by TAI with the actual length of a day on Earth. Universal Time (UT) was created at the International Meridian Conference in 1884. This is the basis for the 24-hour time zone system we know today.

Why do some websites use UTC time?

Some websites, for example Wikipedia, use UTC because it does not make any country look more important than the others. It offers one time for all the Internet (the same time can be used by people all over the world). Time zones are often named by how many hours they are different from UTC time.

What does UT stand for?

It is used to compare the pace provided by TAI with the actual length of a day on Earth. Universal Time (UT) was created at the International Meridian Conference in 1884. This is the basis for the 24-hour time zone system we know today. At the time, Greenwich Mean Time (GMT) was chosen as the world’s time standard.