![]() ![]() To see more detail view our larger format world time zone map. Time zones to the east of the Greenwich meridian are later and time zones to the west of the Greenwich meridian are earlier. The Greenwich meridian time zone is 7 1/2 degrees east and 7 1/2 degrees west of zero degrees longitude. This line runs through the United Kingdom, France, Spain, Algeria, Mali and Ghana in Africa. The time convention begins with Universal Coordinated Time (UTC) which is also commonly referred to as Greenwich Mean Time (GMT) being located at the Greenwich meridian. In theory time zones are based on the division of the world into twenty four time zones of 15 degrees longitude each. The world time zone map indicates the standard time zones actually observed. The hours added or subtracted from the time in Greenwich are marked on the map. Most countries do not adjust their time zone observance and when they do it most likely involves small boundary changes or changes in the observance of daylight saving time. This map layer shows the 24 time zones commonly used in the Greenwich Mean Time model. Because some countries, islands and states do not want to be divided into several zones, the zones' boundaries tend to wander considerably from straight north-south lines.The world time zone map uses a repeating color scheme to designate the different standard time zones observed in each country. The international dateline was drawn to generally follow the 180 meridian in the Pacific Ocean. Current Local Time in Locations in Tanzania with Links for More Information (8 Locations) Arusha. In many places, these offsets change twice a year due to DST transitions. Most time zones are exactly one hour apart and traditionally calculate their local time as a difference from UTC or GMT. The 24 standard meridians, every 15 east and west of 0 at Greenwich, England, were designated the centers of the zones. The world is divided into several time zones. C., applied the same procedure to zones all around the world. On November 1, 1884, the International Meridian Conference in Washington, D. ![]() ![]() Almost all states in the US use Daylight Saving Time (DST). In addition the uninhabited atolls of Baker Island (AoE) and Wake Island (WAKT) add to the time zone count, making 11 the total number of time zones in the US. At noon, on November 18, 1883, telegraph lines transmitted GMT time to major cities where authorities adjusted their clocks to their zone's proper time. There are 9 official time zones according to the law. That year, the United States was divided into four time zones roughly centered on the 75th, 90th, 105th, and 120th meridians. amCharts maintains several time zone related maps to make it easy for you to display time zone centric maps. Until 1883 most railway companies relied on some 100 different, but consistent, time zones. Click on any red dot and go to that citys page with time, weather, sunrise/set, moon phases and lots more. Same time zone without DST, color is usually dimmed. 4-color time zones 4-hour intervals between the same colors. DST is displayed if there is Daylight Saving Time at the moment. The Clock time is updated with the time change, along with the time zone and summer or winter symbols. Cities Countries GMT time UTC time AM and PM. The problem of keeping track of over 300 local times was overcome by establishing railroad time zones. Hover your mouse over any of the red dots to see the name of the city and country and current local time. Check the current time in Australia and time zone information, the UTC offset and daylight saving time dates in 2024. Until the 1860s most cities relied upon their own local “sun” time, but this time changed by approximately one minute for every 12 miles traveled east or west. Time zones did not become necessary in the United States until trains made it possible to travel hundreds of miles in a day. Source: National Institute of Standards and Technology Physics Laboratory ![]()
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