Coordinated Universal Time

Table of Contents

Introduction References & Edit History Quick Facts & Related Topics

Images & Videos

Daylight Saving Time?

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Time zone map with standard time zones and International Date Line

Why Are Some Time Zones 30 Minutes Off Instead of an Hour?

Highway Night Traffic Portland, drive, driving, car, automobile.

What's the Difference Between Speed and Velocity?

Moonrise over Tucson, Arizona

Why Doesn’t Arizona Observe Daylight Saving Time?

Calendar marking march 15th

22 Questions About Time and Timekeeping Answered

Centimetres vs inches, metal rulers on a white background with clipping path.

15 Questions About Units of Measurement Answered

Discover

Leonardo da Vinci (1452-1519), Italian Renaissance painter from Florence. Engraving by Cosomo Colombini (d. 1812) after a Leonardo self portrait. Ca. 1500.

10 Famous Artworks by Leonardo da Vinci

Aphrodite. Greek mythology. Sculpture. Aphrodite is the Greek goddess of love and beauty.

12 Greek Gods and Goddesses

Camel at Khor Rori, Oman; mammal.

Do Camels Store Water in Their Humps?

Calendar marking march 15th

22 Questions About Time and Timekeeping Answered

Panoramic view at sunrise of moai, Ahu Tongariki, Easter Island (Rapa Nui), Chile

6 Lost Civilizations

World Data Locator Map: Australia

Is Australia an Island?

Young boys working in a thread spinning mill in Macon, Georgia, 1909. Boys are so small they have to climb onto the spinning frame to reach and fix broken threads and put back empty bobbins. Child labor. Industrial revolution

The Rise of the Machines: Pros and Cons of the Industrial Revolution

Coordinated Universal Time: Media

Videos

Daylight Saving Time?

Daylight Saving Time?

What's the point of Daylight Saving Time?

Video: Encyclopædia Britannica, Inc.

Images

time zones

time zones

The world is divided into 24 time zones, each of which is about 15 degrees of longitude...

Encyclopædia Britannica, Inc.

VIEW MORE in these related Britannica articles: