To convert a time from Pacific Daylight Time to Greenwich Mean Time, add 7 hours to the time in PDT. More »

Greenwich Mountain Time, or GMT, is based out of Greenwich, England. It is viewed as the median, or starting point, for all time zones. Central Standard Time, or CST, is the time zone that runs vertically through the cen... More »

The time zones were standardized in the 19th century in order to maintain the schedules for the train systems. The current system consists of 24 standard meridians of longitude beginning in Greenwich, England. GMT stands... More » Science Time & Calendars

The UK, Portugal, Greenland, Iceland and several West African countries use Greenwich Mean Time, sometimes called Western European Time. GMT is also known as 'Zulu Time' in military slang. More »

The time difference between Greenwich Mean Time (GMT) and Eastern Standard Time (EST) is 5 hours, according to the WWP's Eastern Standard Time website. During Daylight Savings Time, when the clocks are turned ahead an ho... More »

Greenwich Mean Time can be converted to India Standard Time by moving ahead 5.5 hours. For example, at midnight GMT, the time is 5:30 a.m. IST. The conversion between GMT and IST may vary during daylight savings time dep... More »

You can convert any time listed in GMT to EST by subtracting 5 hours, which means that at 2 p.m. GMT it would be 9 a.m. EST. Greenwich Mean Time, commonly abbreviated as GMT, is the world standard time keeper, and is als... More »