In 1883 a four (4) time zone system was adopted by the railroads to reduce confusion and help govern their operations when it came to Interstate Commerce. and Canadian railroad terminals across the country observed around a 100 different locally established time zones. Prior to the adoption of our current four-zone time system, both U.S. History of Standard Time and Daylight Saving Time (DST) The Department of Transportation oversees Daylight Savings Time and Time zones. If you guessed choice 4, you are correct. National Institute of Standards and Technology.Government agency oversees the Nation’s time zones and Daylight Savings Time? On a world scale Coordinated Universal Time (UTC) formerly known as Greenwich Mean Time (GMT) is the primary time standard used and is referenced to the Prime Meridian. The first Standard Time zone for the United States is minus (-) four hours from the Prime Meridian. Standard Time zones are areas based on the longitudinal position (plus or minus) from the Prime Meridian. The Prime Meridian located at Greenwich, England is the chosen arbitrary reference point on the earth representing 0 degrees longitude. Standard Time is a uniform time for a place (a zone) based on its longitudinal location in reference to the Prime Meridian.
The Daylight Saving Time rules were changed in 2007 by the Energy Policy Act of 2005 in the interest of reducing energy consumption, we added a few weeks.Ĭonflicting studies have been published over the years showing both positive and negative benefits of Daylight Saving Time, such as Energy savings and Potential health effects according to Congressional Research Service reports. When Daylight Savings Time begins we “spring ahead” effectively doing the opposite by moving one hour of daylight from the morning to the evening. This transition from Daylight Savings Time to Standard Time effectively moves one hour of daylight from the evening to the morning. Clocks are moved back “falling back” one hour to local Standard Time. the first Sunday of November – this year it’s November 3, 2019. Daylight Savings Time Ends – Don’t forget to set your clocks back tomorrow (Photo Credit ) Daylight Savings Timeĭaylight Savings Time (DST) is when clocks are moved one hour ahead of (local) Standard Time, creating the effect of more sunlit hours in evenings in the United States, European countries call it “Summer-time period”ĭaylight Savings Time ends at 2:00 a.m.
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