1802: Madras time was setup by John Goldingham and this was used widely by the railways in India. - Indian Standard Time, Wikipedia.

1802: Madras Time was a time zone set up in 1802 by John Goldingham, the first official astronomer of the British East India Company in India. - Madras time, Wikipedia.

December 3, 1838: Cleveland Abbe (December 3, 1838 – October 28, 1916) was a famous American meteorologist and advocate of time zones. - Cleveland Abbe, Wikipedia.

, 1847: The first time zone in the world is established by British railways with GMT hand-carried on chronometers. - 1847 in rail transport, Wikipedia.

August 23, 1852: About August 23, 1852, time signals were first transmitted by telegraph from the Royal Observatory. - Time zone, Genealogy_wikia.

August 23, 1852: About August 23, 1852, time signals were first transmitted by telegraph from the Royal Observatory, Greenwich. - Time zone, Wikipedia.

1855: Even though 98% of Great Britain's public clocks were using GMT by 1855, it was not made Britain's legal time until August 2, 1880. - Time zone, Wikipedia.

1855: Even though 98% of Great Britain's public clocks were using GMT by 1855, it was not made Britain's legal time until August 2, 1880. - Time zone, Genealogy_wikia.

1858: While the first person to propose a worldwide system of time zones was the Italian mathematician Quirico Filopanti, in his book Miranda! published in 1858, his idea was unknown outside the pages of his book until long after his death, so it did not influence the adoption of time zones during the 19th century. - Time zone, Wikipedia.

1858: In his work Miranda in 1858 he develops the idea of time zones. - Quirico Filopanti, Wikipedia.

1863: Charles F. Dowd proposed a system of one-hour standard time zones for American railroads about 1863, although he published nothing on the matter at that time and did not consult railroad officials until 1869. - Time zone, Wikipedia.

1863: Charles F. Dowd proposed a system of one-hour standard time zones for American railroads about 1863, although he published nothing on the matter at that time and did not consult railroad officials until 1869. - Time zone, Genealogy_wikia.

November 2, 1868: The then-British colony of New Zealand officially adopted a standard time to be observed throughout the colony, and was perhaps the first country to do so. - Time zone, Wikipedia.

November 2, 1868: 1868, New Zealand (then a British colony) officially adopted a standard time to be observed throughout the colony, and was perhaps the first country to do so. - Time zone, Genealogy_wikia.

1870: He proposed four ideal time zones (having north–south borders), the first centered on Washington, but by 1872 the first was centered 75°W of Greenwich, with geographic borders (for example, sections of the Appalachian Mountains). - Time zone, Genealogy_wikia.

1870: He proposed four ideal time zones (having north–south borders), the first centered on Washington, D.C., but by 1872 the first was centered 75°W of Greenwich, with geographic borders (for example, sections of the Appalachian Mountains). - Time zone, Wikipedia.

1876: Time zones were first proposed for the entire world by Canada's Sir Sandford Fleming in 1876 as an appendage to the single 24-hour clock he proposed for the entire world (located at the center of the Earth and not linked to any surface meridian). - Time zone, Genealogy_wikia.

1876: His first proposal was for a global 24-hour clock, conceptually located at the center of the Earth and not linked to any surface meridian. - Time zone, Wikipedia.

1879: Canadian Sir Sandford Fleming proposed a worldwide system of time zones in 1879. - Time zone, Wikipedia.

1879: He specified that his universal day would begin at the anti-meridian of Greenwich (180th meridian), while conceding that hourly time zones might have some limited local use. - Time zone, Wikipedia.

1879: He specified that his universal day would begin at the anti-meridian of Greenwich (now called 180°), while conceding that hourly time zones might have some limited local use. - Time zone, Genealogy_wikia.

1879: Standard time, as originally proposed by Sir Sandford Fleming in 1879, divided the world into twenty-four time zones, each one covering exactly 15 degrees of longitude. - Universal Time, Wikipedia.

1880: Despite this early reluctance, railway time rapidly became adopted as the default time across the whole of Great Britain although it still took until 1880 for the government to legislate on the establishment of a single Standard Time and a single time zone for the country. - Railway time, Wikipedia.

1883: Commissioner of Railroads William H. Armstrong gave the following account of the new railroad time system in his Report to the Secretary of the Interior for 1883. - Time zone, Wikipedia.

1883: Standardized Time Zones would not be established in the United States until 1883. - Elias Loomis, Wikipedia.

October 11, 1883: Allen, editor of the Traveler's Official Guide, and secretary of the time conventions, is entitled to the credit of having perfected the admirable system which was adopted by the General Time Convention of Railway Managers, held at Chicago, October 11, 1883, and ratified by the Southern Railway Time Convention, held at New York, October 17, 1883. - Time zone, Wikipedia.

November 18, 1883: "The new arrangement goes into effect November 18, 1883, and all changes of time are to occur at the termini of roads, or at the ends of divisions. - Time zone, Wikipedia.

November 18, 1883: It was adopted on Sunday, November 18, 1883, also called "The Day of Two Noons", when each railroad station clock was reset as standard-time noon was reached within each time zone. - Time zone, Genealogy_wikia.

November 18, 1883: 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. - History of time in the United States, Wikipedia.

November 18, 1883: It was inaugurated on Sunday, November 18, 1883, also called "The Day of Two Noons", when each railroad station clock was reset as standard-time noon was reached within each time zone. - Time zone, Wikipedia.

November 18, 1883: American and Canadian railroads institute five standard continental time zones, ending the confusion of thousands of local times. - November 18, Wikipedia.

November 18, 1883: American and Canadian railroads institute five standard continental time zones, ending the confusion of thousands of local times. - November 18, Genealogy_wikia.

November 18, 1883: A system of one-hour standard time zones for American railroads was first implemented. - Central Pacific Railroad, Wikipedia.

1884: Indeed, the 1884 International Meridian Conference explicitly refused to propose or agree to any time zones, stating that they were outside its purview. - International Date Line, Wikipedia.

October, 1884: He also proposed his system at the International Meridian Conference in October 1884, but it did not adopt his time zones because they were not within its purview. - Time zone, Wikipedia.

October, 1884: The International Meridian Conference did not adopt his time zones because they were not within its purview. - Time zone, Genealogy_wikia.

March 19, 1900: The confusion of times came to an end when Standard zone time was formally adopted by the U.S. Congress on March 19, 1918, in the Standard Time Act. - Time zone, Wikipedia.

1900: A notable exception was Detroit (which is about half-way between the meridians of eastern time and central time), which kept local time until 1900, then tried Central Standard Time, local mean time, and Eastern Standard Time before a May 1915 ordinance settled on EST and was ratified by popular vote in August 1916. - Time zone, Wikipedia.

1900: A notable exception was Detroit (which is about half-way between the meridians of eastern time and central time), which kept local time until 1900, then tried Central Standard Time, local mean time, and Eastern Standard Time before a May 1915 ordinance settled on EST and was ratified by popular vote in August 1916. - Time zone, Genealogy_wikia.

1905: ^{[citation needed]} Though British India did not officially adopt the standard time zones until 1905, when the meridian passing east of Allahabad at 82.5° E longitude was picked as the central meridian for India, corresponding to a single time zone for the country. - Indian Standard Time, Wikipedia.

1907: Modern DST was first proposed in 1907 and was in widespread use in 1916 as a wartime measure aimed at conserving coal. - Time zone, Wikipedia.

1907: Modern DST was first proposed in 1907 and was widespread use in 1916 as a wartime measure aimed at conserving coal. - Time zone, Genealogy_wikia.

March 19, 1918: This hodgepodge ended when Standard zone time was formally adopted by the U.S. Congress on 19 March 1918 as the Standard Time Act. - Time zone, Genealogy_wikia.

March 19, 1918: The U.S. Congress establishes time zones and approves daylight saving time (DST goes into effect on March 31). - 1918 in the United States, Wikipedia.

1918: The U.S. Congress establishes time zones and approves daylight saving time. - Portal:United States/On this day/March 19, Wikipedia.

1919: 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. - History of time in the United States, Wikipedia.

1920s: Since the 1920s a nautical standard time system has been in operation for ships on the high seas. - Time zone, Wikipedia.

1920s: Since the 1920s a nautical standard time system has been in operation for ships on the high seas. - Time zone, Genealogy_wikia.

1929: Nevertheless, most major countries had adopted hourly time zones by 1929. - Time zone, Wikipedia.

1929: Nevertheless, most major countries had adopted hourly time zones by 1929. - Time zone, Genealogy_wikia.

1930s: American radio-network broadcasters habitually forbade prerecorded broadcasts in the 1930s and 1940s requiring radio programs played for the Eastern and Central time zones to be repeated three hours later for the Pacific time zone. - Broadcasting, Wikipedia.

June 16, 1930: In accordance with the 16 June 1930 Decree of the Council of People's Commissars, the Decree Time was introduced by adding one hour to the time in each time zone of the USSR, so that Moscow Time became three hours ahead of Coordinated Universal Time. - Moscow Time, Wikipedia.

1947: After independence in 1947, the Indian government established IST as the official time for the whole country, although Kolkata and Mumbai retained their own local time for a few more years. - Indian Standard Time, Wikipedia.

1949: Before the Communist control of the mainland in 1949 during the Chinese Civil War, China was separated into five time zones. - Time zone, Genealogy_wikia.

1949: Before 1949 China used five time zones (see Time in China). - Time zone, Wikipedia.

1949: Before 1949, China was separated into five time zones. - Time zone, Wikipedia.

1957: 1957 The Indiana General Assembly passes a law to make Central time the official time zone of the state but to permit any community to switch to daylight saving time during the summer. - Time in Indiana, Wikipedia.

October 26, 1961: At 12:30 EST on 26 October 1961, the RP-1 propellant started to flow into the rocket. - SA-1 (Apollo), Wikipedia.

1968: 1968 While the Department of Transportation was considering where the time zone line should be, several broadcast companies filed a federal lawsuit to compel the Department to enforce the observance of daylight saving time in Indiana. - Time in Indiana, Wikipedia.

January 1, 1972: But on January 1, 1972 it became fixed, using predefined leap seconds instead of rate changes. - Time zone, Genealogy_wikia.

January, 1972: However, atomic clock rates were fixed and predefined leap seconds replaced rate changes. - Time zone, Wikipedia.

1972: 1972 The Indiana General Assembly overrides a veto from Governor Whitcomb to place the Northwest and Southwest corners of Indiana in the Central Time Zone on daylight saving time, and to place the rest of the state on Eastern Standard Time, upon Federal approval(See IC 1-1-8.1). - Time in Indiana, Wikipedia.

1972: 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. - History of time in the United States, Wikipedia.

1977: 1977 Pike County requests to be moved from the Central Time Zone to the Eastern Time Zone. - Time in Indiana, Wikipedia.

1981: 1981 Starke County requests to be moved from the Central Time Zone to the Eastern Time Zone. - Time in Indiana, Wikipedia.

1983: The only difference is that the name of the time zone was officially changed from Yukon Standard Time Zone to Alaska Standard Time Zone following the Alaska switch from four different time zones to predominantly UTC−9 in 1983. - Yukon Standard Time Zone, Wikipedia.

September 19, 1985: On Thursday, 19 September 1985, at 7:19 am local time, Mexico City was struck by an earthquake of magnitude 8.1^[35] on the Richter scale. - Mexico City, Wikipedia.

1986: 1986–1987 Jasper County and Starke County petition the Department of Transportation to be moved from the Central Time Zone to the Eastern Time Zone. - Time in Indiana, Wikipedia.

1989: This was to accommodate the fact that the Denver Broncos and the San Francisco 49ers hosted the 1989-90 AFC and NFC championship games in the Mountain Standard Time Zone and Pacific Standard Time Zone, respectively — thus avoiding a locally played game at 9:30 a.m. - 2005–06 NFL playoffs, Wikipedia.

1989: This was the first time since the 1989-90 playoffs that neither conference championship game took place in the Eastern or Central time zones. - 2005–06 NFL playoffs, Wikipedia.

1991: Starke County petitions the Department of Transportation to be moved from the Central Time Zone to the Eastern Time Zone. - Time in Indiana, Wikipedia.

October 27, 1991: Starke County is moved from the Central Time Zone to Eastern Time Zone effective October 27, 1991. - Time in Indiana, Wikipedia.

December 23, 1994: The Republic of Kiribati announced a change of time zone for the Line Islands, to take effect January 1, 1995. - Caroline Island, Wikipedia.

December 31, 1994: December 31 is skipped by the Phoenix Islands to switch from the UTC−11 time zone to UTC+13, and by the Line Islands to switch from UTC−10 to UTC+14. - 1994, Wikipedia.

October, 1999: Because of its ties with Wendover, Utah, and its economic ties with central Utah, the U.S. Department of Transportation moved West Wendover to the Mountain Time Zone in October 1999, while the rest of Nevada remains in the Pacific Time Zone. - West Wendover, Nevada, Wikipedia.