Certain regions of eastern Asia, including all of China, observe a time zone eight hours ahead of UTC, known as Chinese Standard Time. These regions of Asia do not observe daylight saving time. It is the same time zone as Australian Western Standard Time. World map showing location of Asia A satellite composite image of Asia Asia is the central and eastern part of the continent of Eurasia, defined by subtracting the European peninsula from Eurasia. ... The Great Wall of China, stretching over 6,700 km, was erected beginning in the 3rd century BC to guard the north from raids by men on horses. ... Daylight saving time (also called DST, or Summer Time) is the portion of the year in which a regions local time is advanced by (usually) one hour from its standard official time. ...

The Dilemma of a Uniform Time Zone

Sunset is normally between 5pm and 7pm in a typical region on a typical day, but because all of China observes the same time zone, in the far west the Sun usually does not set until past nine o'clock, while the far east commonly experiences sunrises before 5am. If the same rule was used in the United States, then California and Florida would observe the same time, giving huge discrepancies. A red sunset panorama Sunset, also called sundown in some American English dialects, is the time at which the Sun disappears below the horizon in the west. ... The term pm or Pm, when used by itself can refer to: pm is short for post meridiem (also written or PM), Latin for after noon. This is used to define hours of the day, for example, The opposite of pm is am. ... The United States of America — also referred to as the United States, the U.S.A., the U.S., America, the States, or (archaically) Columbia—is a federal republic of 50 states located primarily in central North America (with the exception of two states: Alaska and Hawaii). ... State nickname: The Golden State Other U.S. States Capital Sacramento Largest city Los Angeles Governor Arnold Schwarzenegger Official languages English Area 410,000 km² (3rd)  - Land 404,298 km²  - Water 20,047 km² (4. ... State nickname: Everglade State, Sunshine State Other U.S. States Capital Tallahassee Largest city Jacksonville Governor Jeb Bush Official languages English Area 170,451 km² (22nd)  - Land 137,374 km²  - Water 30,486 km² (17. ...