USA HISTORY

Detailed explanation-1: -On April 11, 1883, in St. Louis, Missouri, railroad officials agreed to create five time zones in North America: Provincial, Eastern, Central, Mountain, and Pacific. The concept of standard time zones had actually been suggested by several professors going back to the early 1870s.

Detailed explanation-2: -The original idea was credited to Dr. William Hyde Wollaston (1766-1828) and was popularized by Abraham Follett Osler (1808-1903). The Great Western Railway was the first to adopt London time, in November 1840. Other railways followed suit, and by 1847 most (though not all) railways used London time.

Detailed explanation-3: -The federal organization in charge of railroad regulation – the Interstate Commerce Commission – was given the power to address coordination concerns in 1918. That year, five time zones were officially adopted as the US entered World War I: the Eastern, Central, Mountain, Pacific, and Alaskan zones still in use today.

Detailed explanation-4: -What’s railway time and how did it help standardise time around the world more than 180 years ago? It’s the standardisation of time across the railway in Britain, in November 1840.

Detailed explanation-5: -Indian Standard Time (IST), sometimes also called India Standard Time, is the time zone observed throughout India, with a time offset of UTC+05:30. India does not observe daylight saving time or other seasonal adjustments. In military and aviation time, IST is designated E* ("Echo-Star").