History of time in the United States

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Plaque in Chicago marking the creation of the four time zones of the continental US in 1883 The Standard Time System in The United States Adopted on This Site--October 11, 1883, Continental Illinois Bank Building, Chicago, Illinois (9181564700).jpg
Plaque in Chicago marking the creation of the four time zones of the continental US in 1883
Colorized 1913 time zone map of the United States, showing boundaries very different from today Time zone map of the United States 1913 (colorized).png
Colorized 1913 time zone map of the United States, showing boundaries very different from today
Map of U.S. time zones during between April 2, 2006, and March 11, 2007. The current situation is different only in that six Indiana counties have since been moved from the Central time zone to the Eastern time zone. US-Timezones.svg
Map of U.S. time zones during between April 2, 2006, and March 11, 2007. The current situation is different only in that six Indiana counties have since been moved from the Central time zone to the Eastern time zone.

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.

Contents

Use of standard time gradually increased because of its obvious practical advantages for communication and travel. Standard time in time zones was not established in U.S. law until the Standard Time Act of 1918 of March 19, 1918, also known as the Calder Act (15 USC 260). [1] [2] The act also established daylight saving time, itself a contentious idea.

Daylight saving time was repealed in 1919, but standard time in time zones remained in law, with the Interstate Commerce Commission (ICC) having the authority over time zone boundaries. Daylight time became a local matter; ultimately, it was reinstated nationally early in World War II, and was continuously observed until the end of the war.

After the war its use varied among states and localities. The Uniform Time Act of 1966 provided standardization in the dates of beginning and end of daylight time in the U.S. but allowed for local exemptions from its observance. The act also continued the authority of the ICC over time zone boundaries. In subsequent years, the United States Congress transferred the authority over time zones to the U.S. Department of Transportation (DOT).

Time zone boundaries have changed greatly since their original introduction and changes still occasionally occur. DOT issues press releases when these changes are made. Generally, time zone boundaries have tended to shift westward. Places on the eastern edge of a time zone can effectively move sunset an hour later (by the clock) by shifting to the time zone immediately to their east.

If they do so, the boundary of that zone is locally shifted to the west; the accumulation of such changes results in the long distance term westward trend. The process is not inexorable, however, since the late sunrises experienced by such places during the winter may be regarded as too undesirable. Furthermore, under the law, the principal standard for deciding on a time zone change is the "convenience of commerce". Proposed time zone changes have been both approved and rejected based on this criterion, although most such proposals have been accepted.

Railway time

Map of 1884/5 explaining the time zones used on American railway lines. PSM V26 D162 Standard railway time vs greenwich mean time.jpg
Map of 1884/5 explaining the time zones used on American railway lines.
This cartoon appeared on the cover of Life magazine, January 3, 1884 Backward, Turn Backward, O Time (Life, 1883-01-03).jpg
This cartoon appeared on the cover of Life magazine, January 3, 1884

One of the first reported incidents which brought about a change in how time was organized on railways in the United States occurred in New England in August 1853. Two trains heading towards each other on the same track collided as the train guards had different times set on their watches, resulting in the death of 14 passengers. Railway schedules were coordinated in New England shortly after this incident [3] Numerous other collisions led to the setting up of the General Time Convention, a committee of railway companies to agree on scheduling. [4]

In 1870 Charles F. Dowd, who was unconnected with the railway movement or civil authorities, proposed A System of National Times for Railroads, which involved a single time for railways but the keeping of local times for towns. Although this did not find favor with railway managers, in 1881 they agreed for the idea to be investigated by William Frederick Allen, Secretary of the General Time Convention and Managing Editor of the Travellers' Official Guide to the Railways. He proposed replacing the 50 different railway times with five time zones. He eventually persuaded the railway managers and the politicians running the cities that had several railway stations that it was in their interests to speedily adopt his simpler proposals, which aligned the zones with cities' railroad stations. In doing so, they would pre-empt the imposition of more costly and cumbersome arrangements by different state legislators and the naval authorities, both of whom favored retention of local times. [4] On 11 October 1883, a convention of railroad executives met in Chicago at the General Time Convention (latter renamed the American Railway Association) and agreed to the implementation of five time zones in North America, using as a basis Greenwich Mean Time. [5] [6]

Right to the end there was opposition expressed by many smaller towns and cities to the imposition of railway time. For example, in Indianapolis the report in the daily Sentinel for 17 November 1883 protested that people would have to "eat sleep work ... and marry by railroad time". [7] However, with the support of nearly all railway companies, most cities and influential observatories such as Yale and Harvard, this collaborative approach led to standard railway time being introduced at noon on 18 November 1883. This consensus held and was incorporated into federal law only in 1918. [4] [8] [9]

Standard time and war time

Daylight saving time was established by the Standard Time Act of 1918. The Act was intended to save electricity for seven months of the year, during World War I. [10] DST was repealed in 1919 over a presidential veto, [11] but standard time in time zones remained in law, with the Interstate Commerce Commission (ICC) having the authority over time zone boundaries. Daylight time became a local matter.

During World War II, Congress enacted the War Time Act (56 Stat. 9) on January 20, 1942. Year-round DST was reinstated in the United States on February 9, 1942, again as a wartime measure to conserve energy resources. [12] This remained in effect until after the end of the war. After V-J Day, the word 'war' and the middle letter 'W' were changed to 'prevailing' and 'P', but the advance in the clock was not reverted.

The Amendment to the War Time Act (59 Stat. 537), enacted September 25, 1945, ended DST as of September 30, 1945. During this period, the official designation War Time was used for year-round DST. For example, Eastern War Time (EWT) would be the equivalent of Eastern Daylight Time during this period.

Local-option daylight saving time

Time zone map of 1948. The borders between zones are slightly different to those of today. U. S. Department of Commerce. Map of standard time zones of the United States and adjacent parts of Canada and Mexico as of January. 1 - 1948 - btv1b531895575.jpg
Time zone map of 1948. The borders between zones are slightly different to those of today.

From 1945 to 1966 U.S. federal law did not address DST. States and cities were free to observe DST or not, and most places that did observe DST did so from the last Sunday in April to the last Sunday in September. In the mid-1950s many areas in the northeastern United States began extending DST to the last Sunday in October. The lack of standardization led to a patchwork where some areas observed DST while adjacent areas did not, and it was not unheard of to have to reset a clock several times during a short trip (e.g., bus drivers operating on West Virginia Route 2 between Moundsville, West Virginia, and Steubenville, Ohio had to reset their watches seven times over 35 miles). [13]

In summer 1960 April–October Daylight Time was nearly universal in Pennsylvania, Maryland, Delaware and states east and north of there. In Minnesota, Iowa, Missouri, Kentucky and Virginia and states north and east of there, some areas had it and some did not. Except for California and Nevada, which had April-Sept Daylight Time, 99% of the rest of the country used Standard Time year-round. (The Official Guide says "State law prohibits the observance of "Daylight Saving" time in Kentucky but Anchorage, Louisville and Shelbyville will advance their clocks one hour from Central Standard time for the period April 24 to October 29, inclusive.")

In the middle 1960s the airline and other transportation industries lobbied for uniformity of Daylight dates in the United States.

Unified daylight saving time

The U.S. federal Uniform Time Act became law on April 13, 1966, and it mandated that DST begin nationwide on the last Sunday in April and end on the last Sunday in October, effective in 1967. The act explicitly preempted all previously enacted state laws related to the beginning and ending of DST effective in 1966. Any state that wanted to be exempt from DST could do so by passing a state law, provided that it exempted the entire state, and Alaska, Arizona, Hawaii, Indiana, and Michigan chose to do so. However, Alaska, Indiana, and Michigan subsequently chose to observe DST. The law was amended in 1972 to permit states that straddle a time zone boundary to exempt the entire area of the state lying in one time zone. Indiana chose to exempt the portion of the state lying in the Eastern Time Zone; however, that exemption was eliminated in 2006 and the entire state of Indiana now observes DST, leaving Arizona (with the exception of the Navajo Nation) and Hawaii as the only two states not to observe DST. On July 8, 1986, President Ronald Reagan signed the Federal Fire Prevention and Control Act of 1986 into law that contained a daylight saving rider authored by Senator Slade Gorton (R-WA). [10] The starting date of DST was amended to the first Sunday in April effective in 1987. DST continued to end on the last Sunday in October. While the states retain the capability to exempt themselves from DST, they are forbidden by the 1966 federal law (15 USC 260a(b)) [14] from increasing a state's time spent on DST, unless the United States Congress does this for the entire nation.

Permanent daylight saving time

In response to the 1973 energy crisis, DST in the United States began earlier in both 1974 and 1975, commencing on the first Sunday in January (January 6) in the former year and the last Sunday in February (February 23) in the latter. The extension of daylight saving time was not continued due to public opposition to late sunrise times during the winter months. In 1976, the United States reverted to the schedule set in the Uniform Time Act. [15]

Daylight saving time extensions

Starting April 5, 1987, DST was extended three weeks, by moving its start date up from the last Sunday of April to the first Sunday. The change was introduced by Federal Fire Prevention and Control Act of 1986. Starting March 11, 2007, DST was extended another four to five weeks, by moving both its start date to the second Sunday of March and its end date to the first Sunday of November. This time the change was introduced by Representatives Fred Upton (R-MI) and Edward Markey (D-MA) and added to the Energy Policy Act of 2005; the House had originally approved a motion that would have extended DST even farther from the first Sunday in March to the last Sunday in November, but Senators Jeff Bingaman (D-NM) and Pete Domenici (R-NM) agreed to scale back the proposal in conference committee due to complaints from farmers and the airline industry. Proponents claimed that the extension would save "the equivalent of" 10,000 barrels (1,600 m3) of oil per day, but this figure was based on U.S. Department of Energy information from the 1970s, the accuracy and relevance of which the DoE no longer stands by. Later studies by the U.S. Department of Energy and the California Energy Commission have predicted much smaller energy benefits. [16] There is very little recent research on what the actual positive effects, if any, might be.

Since DST moves sunrise one hour later by the clock, late sunrise times become a problem when DST is observed either too far before the vernal equinox or too far after the autumnal equinox. Because of this, the extension was greeted with criticism by those concerned for the safety of children who would have been forced to travel to school before sunrise, especially in the month of March. In addition, the airline industry was especially concerned if DST were to be extended through to the last Sunday in November, as this is very often the Sunday after Thanksgiving (except for 2013, 2019, 2024, and 2030), as this is always the Sunday after the fourth Friday in November, and Thanksgiving is on the fourth Thursday in November. This is one of the busiest travel days at American airports, and could have resulted in much havoc among travelers who forgot that the clocks were changing that day.

If the original proposal to extend DST through the last Sunday in November had been adopted, the entire United States, with the exception of the states that exempted themselves, would have experienced the latest sunrises of the year during the month of November, which would have approached the extremely late sunrise times when DST went into effect on January 6, 1974, due to the 1973 energy crisis creeping after 9 am in places like New Salem, North Dakota at the northwestern edges of time zones.

Under the current rules, the latest sunrise occurs on the day before DST ends, everywhere in the United States that observes DST. This sunrise time is later than any during the winter months.

Start and end dates of daylight saving time in the United States

Key to colors
future date
second Sunday March, first Sunday November
first Sunday April, last Sunday October
last Sunday April, last Sunday October
YearDST begins (local)DST ends (local)Notes
2026Sun March 8 02:00Sun November 1 02:00
2025Sun March 9 02:00Sun November 2 02:00
2024Sun March 10 02:00Sun November 3 02:00
2023Sun March 12 02:00Sun November 5 02:00
2022Sun March 13 02:00Sun November 6 02:00
2021Sun March 14 02:00Sun November 7 02:00
2020Sun March 8 02:00Sun November 1 02:00
2019Sun March 10 02:00Sun November 3 02:00
2018Sun March 11 02:00Sun November 4 02:00
2017Sun March 12 02:00Sun November 5 02:00
2016Sun March 13 02:00Sun November 6 02:00
2015Sun March 8 02:00Sun November 1 02:00
2014Sun March 9 02:00Sun November 2 02:00
2013Sun March 10 02:00Sun November 3 02:00
2012Sun March 11 02:00Sun November 4 02:00
2011Sun March 13 02:00Sun November 6 02:00
2010Sun March 14 02:00Sun November 7 02:00
2009Sun March 8 02:00Sun November 1 02:00
2008Sun March 9 02:00Sun November 2 02:00
2007Sun March 11 02:00Sun November 4 02:00Energy Policy Act of 2005
2006Sun April 2 02:00Sun October 29 02:00All of Indiana now on DST
2005Sun April 3 02:00Sun October 30 02:00
2004Sun April 4 02:00Sun October 31 02:00
2003Sun April 6 02:00Sun October 26 02:00
2002Sun April 7 02:00Sun October 27 02:00
2001Sun April 1 02:00Sun October 28 02:00
2000Sun April 2 02:00Sun October 29 02:00
1999Sun April 4 02:00Sun October 31 02:00
1998Sun April 5 02:00Sun October 25 02:00
1997Sun April 6 02:00Sun October 26 02:00
1996Sun April 7 02:00Sun October 27 02:00
1995Sun April 2 02:00Sun October 29 02:00
1994Sun April 3 02:00Sun October 30 02:00
1993Sun April 4 02:00Sun October 31 02:00
1992Sun April 5 02:00Sun October 25 02:00
1991Sun April 7 02:00Sun October 27 02:00
1990Sun April 1 02:00Sun October 28 02:00
1989Sun April 2 02:00Sun October 29 02:00
1988Sun April 3 02:00Sun October 30 02:00
1987Sun April 5 02:00Sun October 25 02:00Federal Fire Prevention and Control Act of 1986
1986Sun April 27 02:00Sun October 26 02:00
1985Sun April 28 02:00Sun October 27 02:00
1984Sun April 29 02:00Sun October 28 02:00
1983Sun April 24 02:00Sun October 30 02:00 Alaska time zones changed Sun October 30 02:00
1982Sun April 25 02:00Sun October 31 02:00
1981Sun April 26 02:00Sun October 25 02:00
1980Sun April 27 02:00Sun October 26 02:00
1979Sun April 29 02:00Sun October 28 02:00
1978Sun April 30 02:00Sun October 29 02:00
1977Sun April 24 02:00Sun October 30 02:00
1976Sun April 25 02:00Sun October 31 02:00
1975Sun February 23 02:00Sun October 26 02:00Emergency Daylight Time Act
Michigan exempted, began DST Sun April 27 02:00
1974Sun January 6 02:00Sun October 27 02:00Emergency Daylight Time Act
Southern Idaho and eastern Oregon (Mountain time zone)
began DST Sun February 3 02:00
1973Sun April 29 02:00Sun October 28 02:00All of Michigan now on DST
1972Sun April 30 02:00Sun October 29 02:00
1971Sun April 25 02:00Sun October 31 02:00Indiana (Eastern time zone) opts out
1970Sun April 26 02:00Sun October 25 02:00
1969Sun April 27 02:00Sun October 26 02:00All of Alaska and Indiana now on DST
1968Sun April 28 02:00Sun October 27 02:00Arizona and Michigan opt out
1967Sun April 30 02:00Sun October 29 02:00Alaska, Hawaii, Indiana and territories opt out
1966Sun April 24 02:00Sun October 30 02:00 Uniform Time Act of 1966 required states that used DST in 1966
to conform to last Sunday in April to last Sunday in October
1946–65Local decision, various dates
1945Sun September 30 02:00War Time ends
1944War Time all year
Arizona War Time not observed Sat January 1 02:00–Sat April 1 02:00
Arizona War Time ends Sat September 30 02:00 [17]
1943War Time all year
1942Mon February 9 02:00War Time begins year round
War Time Act
1920–41Local decision, various dates
1919Sun March 30 02:00Sun October 26 02:00An Act For the repeal of the daylight-saving law
enacted August 20, 1919
1918Sun March 31 02:00Sun October 27 02:00Standard Time Act of 1918

See also

Notes

  1. United States statutes at large: containing the laws and concurrent resolutions enacted during the second session of the one hundred fifth congress of the United States of America 1998 and proclamations. Government Printing Office. 1999. p. 599.
  2. History of Daylight Time in the U.S., United States Naval Observatory
  3. Smithsonian's NMAH - Anniversary Exhibition Press Release 1999 "Railway Accident and Standard Time in America" Archived 2011-06-30 at the Wayback Machine - Retrieved March 4
  4. 1 2 3 White Matthew, W - Wharton Business School, Univ of Pennsylvania - March 2005 "The Economics of Time Zones" Archived 2012-05-14 at the Wayback Machine - Retrieved March 7
  5. "Railroads standardize time; country follows − Everywhere West". Newberry Library. March 23, 2018. Retrieved March 23, 2018.
  6. "The New Railroad Time; Favorable Action of the Convention in Chicago. The New Standard Adopted by 78,000 Miles of Road and the Convention Selecting Nov. 18 for the Change". The New York Times. October 12, 1883.
  7. Ralph R. Hamerla, 2006.An American Scientist on the Research Frontier pp 96-7 - Retrieved March 4
  8. NY Times Archive - October 10, 1883 "Railway Time Belt William (Frederick) Allen" - Retrieved March 4
  9. Smithsonian's NMAH - Anniversary Exhibition Press Release 1999 "North American Standard Time introduced 1883" Archived 2011-06-30 at the Wayback Machine - Retrieved March 4
  10. 1 2 A Time-Change Timeline, National Public Radio, March 8, 2007
  11. An Act For the repeal of the daylight-saving law, Pub. L. Tooltip Public Law (United States)  66–40 , 41  Stat.   280 , enacted August 20, 1919
  12. 24/7: A Resource Guide to the Law of Time Standards" Archived 2006-06-18 at the Wayback Machine , June 3, 2002
  13. Daylight Saving Time: Early adoption in law
  14. 15 USC 260a
  15. Daylight Saving Time (Report). 5. Congressional Research Service. July 18, 2019. p. 23.
  16. Energy Concerns Push Clocks Forward this Weekend by Nell Boyce. Morning Edition, National Public Radio, 9 March 2007.
  17. "Daylight Saving Time in Arizona". Archived from the original on September 28, 2006. Retrieved December 2, 2006.

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<span class="mw-page-title-main">Time zone</span> Area that observes a uniform standard time

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<span class="mw-page-title-main">Daylight saving time</span> Seasonal change of clock settings

Daylight saving time (DST), also referred to as daylight saving(s), daylight savings time, daylight time (United States and Canada), or summer time (United Kingdom, European Union, and others), is the practice of advancing clocks to make better use of the longer daylight available during summer, so that darkness falls at a later clock time. The typical implementation of DST is to set clocks forward by one hour in spring or late winter, and to set clocks back by one hour to standard time in the autumn (or fall in North American English, hence the mnemonic: "spring forward and fall back").

<span class="mw-page-title-main">Eastern Time Zone</span> North American time zone (UTC−5 and UTC−4)

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<span class="mw-page-title-main">Mountain Time Zone</span> Time zone of North America

The Mountain Time Zone of North America keeps time by subtracting seven hours from Coordinated Universal Time (UTC) when standard time (UTC−07:00) is in effect, and by subtracting six hours during daylight saving time (UTC−06:00). The clock time in this zone is based on the mean solar time at the 105th meridian west of the Greenwich Observatory. In the United States, the exact specification for the location of time zones and the dividing lines between zones is set forth in the Code of Federal Regulations at 49 CFR 71.

<span class="mw-page-title-main">Indian Standard Time</span> Time zone, observed in India and Sri Lanka; UTC+05:30

Indian Standard Time (IST), sometimes also called India Standard Time, is the time zone observed throughout the Republic of 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"). It is indicated as Asia/Kolkata in the IANA time zone database.

<span class="mw-page-title-main">Time in the United States</span> U.S. time zones

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<span class="mw-page-title-main">Uniform Time Act</span> United States timekeeping and daylight saving time law

The Uniform Time Act of 1966, Pub. L.Tooltip Public Law  89–387, 80 Stat. 107, enacted April 13, 1966, was a Law of the United States to "promote the adoption and observance of uniform time within the standard time zones" prescribed by the Standard Time Act of 1918. Its intended effect was to simplify the official pattern of where and when daylight saving time (DST) is applied within the U.S. Prior to this law, each state had its own scheme for when DST would begin and end, and in some cases, which parts of the state should use it.

<span class="mw-page-title-main">Summer time in Europe</span> Variation of standard clock time

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In Canada, daylight saving time (DST) is observed in nine of the country's ten provinces and two of its three territories—though with exceptions in parts of several provinces and Nunavut.

Daylight saving time in the Americas is the arrangement in the Americas by which clocks are advanced by one hour in spring and moved back in autumn, to make the most of seasonal daylight. The practice is widespread in North America, with most of Canada and the United States participating, but much less so in Central and South America.

<span class="mw-page-title-main">Daylight saving time in Asia</span>

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<span class="mw-page-title-main">Daylight saving time in Africa</span>

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<span class="mw-page-title-main">Time in Portugal</span> Time zones in Portugal

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<span class="mw-page-title-main">Daylight saving time by country</span>

Daylight saving time (DST), also known as summer time, is the practice of advancing clocks during part of the year, typically by one hour around spring and summer, so that daylight ends at a later time of the day. As of 2024, DST is observed in most of Europe, most of North America and parts of Africa and Asia around the Northern Hemisphere summer, and in parts of South America and Oceania around the Southern Hemisphere summer. It was also formerly observed in other areas.

<span class="mw-page-title-main">Permanent time observation in the United States</span> Year-round standard time in the US

Establishing either permanent standard or daylight saving time (DST) eliminates the practice of semi-annual clock changes, specifically the advancement of clocks by one hour from standard time to DST on the second Sunday in March and the retraction of clocks by one hour from DST to standard time on the first Sunday in November.

References