Time Zone - GMT  Greenwich Mean Time or Pacific Standard (PST) or Eastern Standard Time (EST)

Greenwich, England has been the home of Greenwich Mean Time (GMT) since 1884.  GMT is sometimes called Greenwich Meridian Time because it is measured from the Greenwich Meridian Line at the Royal Observatory  in Greenwich.  Remember: Clocks Spring Forward & Fall Back (Fall = Autumn) - details here but GMT remains the same all year around.

To find the Timezone : http://aa.usno.navy.mil/faq/docs/world_tzones.html

Global Time Zones - Country by Country

Timezone World Map 78kb

The date system

American - Month Date Year MM/DD/YYYY

English - Date Month Year DD/MM/YYYY

Cesium Atomic Clock (The most accurate time)