Standard Time Zone chart of the World in 1941-1943 Source map from the Atlas of the World, Map of Time Zones, Russia- map presentation arranged by WorldTimeZone Standard Time Zone chart of the World in 1940 Source map from the Lindbergh Chart - Time zone chart of the world, Hydrographic Office, Washington, D.C., United States- map presentation arranged by WorldTimeZone Standard Time Zone chart of the World in 1927 Source map from the Instituto Meteorologico Nacional, Planisferio de Los Husos Horarios, Uruguay- map presentation arranged by WorldTimeZone Standard Time Zone chart of the World in 1923 Source map from the Department of The Navy, Hydrographic Office- map presentation arranged by WorldTimeZone Standard Time Zone chart of the World in 1921-1923 Source map from the Encyclopedia Britannica, Department of The Navy, Hydrographic Office- map presentation arranged by WorldTimeZone Standard Time Zone chart of the World in 1920 Shokalsky, Russia- map presentation arranged by WorldTimeZone Petersburg State University, academician Y.M. Source map from the Department of Cartography, St. Standard Time Zone chart of the World in 1919-1925 Source map from the Ministere de la Marine, Service Hydrographique, Planisphere des fuseaux horaires, France- map presentation arranged by WorldTimeZone Standard Time Zone chart of the World in 1917 However these "fake islands" continued to appear on different charts (maps, globes) until 1950-1970 by different publishers. were removed, returning the International Date Line to the 180 meridian all the way to the equator and Kiribati-Fiji-Samoa, Source map from the Ball's Popular Guide to the Heavens, The London Geographical institute- map presentation arranged by WorldTimeZone Standard Time Zone chart of the World in 1910 Standard Time Zone chart of the World in 1905Ĭook Islands changed its date from the Eastern (Asia, New Zealand, Australia) side to the Western (American) side on Christmas day 1899 Kingdom of Samoa changed its Eastern (Asiatic) date to the Western (American) date on Monday, 4 of July 1892 Source map from the Brockhaus Konversations-Lexikon, Einheits Und Ortszeit- map presentation arranged by WorldTimeZone Standard Time Zone chart of the World in 1894-1897 Philippines changed its date to the Eastern (Asiatic) side Ĭaptain Morrell falsely reported the discovery of a small islands northwest of the Hawaii (Morrell and Byers Islands) Īlaska changed from the Julian calendar, Asiatic date to the Gregorian calendar, American date in 1867 The Cook Islands was keeping Eastern (Asiatic) dates Kingdom of Samoa was keeping Eastern (Asiatic) dates Philippines kept the Western or American date Īlaska was a Russian territory (Russian America) until 1867 keeping the same date as at home (Eastern or Asiatic date) (WorldTimeZone map may not be used or reproduced without permission (presentation arranged by WorldTimeZone, World Time Zone) History of the International Date Line and the Standard Time Zone charts of the World The IDL is necessary to have a fixed, albeit arbitrary, boundary on the globe where the calendar date advances in the westbound direction.International Date Line from 2011 to now - map presentation arranged by WorldTimeZone Crossing the IDL westbound results in 24 hours being added, advancing the calendar date by one day. These additional time zones result in the standard time and date in some communities being 24 or 25 hours different from the standard time and date in others.Ī traveler crossing the IDL eastbound subtracts one day, or 24 hours, so that the calendar date to the west of the line is repeated after the following midnight. This is because of daylight saving in the UTC+12 zone and the use of additional date-shifted time zones in areas east of the 180th meridian. However, during a two-hour period between 10:00 and 11:59 each day, three different calendar days are in use. The IDL and the moving point of midnight separate the two calendar days that are current somewhere on Earth. Time zones to the east of the Prime Meridian are in advance of UTC time zones to the west are behind UTC. The Prime Meridian helps to define Universal Time and is the meridian from which all other time zones are calculated. The IDL is on the opposite side of the Earth to the Prime Meridian. It passes through the middle of the Pacific Ocean, roughly following the 180° longitude but it deviates to pass around some territories and island groups. The International Date Line is an imaginary line on the surface of the Earth from the north to the south pole and demarcates one calendar day from the next. Freebase (5.00 / 1 vote) Rate this definition:
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