GMT+6 CASIO Bangladesh

11/08/2019

31/12/2017

HNY 2018

27/04/2016

History of time in the United States
The history of standard time in the United States began November 18, 1883, when United States and Canadian railroads instituted standard time in time zones. Before then, time of day was a local matter, and most cities and towns used some form of local solar time, maintained by some well-known clock (for example, on a church steeple or in a jeweler's window). The new standard time system was not immediately embraced by all.
source: en.wikipedia.org

24/04/2016

Greenwich Mean Time (GMT) is often interchanged or confused with Coordinated Universal Time (UTC). But GMT is a time zone and UTC is a time standard. The Royal Observatory in the UK. The Royal Observatory in Greenwich, London, United Kingdom. Image: Greenwich Observatory. Source: www.timeanddate.com

24/04/2016

Greenwich Mean Time (GMT) is the mean solar time at the Royal Observatory in Greenwich, London. GMT was formerly used as the international civil time standard, now superseded in that function by Coordinated Universal Time (UTC).
source: en.wikipedia.org