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The tz database partitions the world into regions where local clocks all show the same time. This map was made by combining version 2023d with OpenStreetMap data, using open source software. [1] This is a list of time zones from release 2025a of the tz database. [2]
This is a list of the UTC time offsets, showing the difference in hours and minutes from Coordinated Universal Time (UTC), from the westernmost (−12:00) to the easternmost (+14:00). It includes countries and regions that observe them during standard time or year-round.
Time zones of the world. A time zone is an area which observes a uniform standard time for legal, commercial and social purposes. Time zones tend to follow the boundaries between countries and their subdivisions instead of strictly following longitude, because it is convenient for areas in frequent communication to keep the same time.
If the absolute time difference between two locations is greater than 12 hours, one must subtract 24 from or add 24 to that number. For example, the time zone UTC+14 will be at the same time of day as UTC−10, though the former is one day ahead of the latter. Jet lag is linked only to the distance travelled along the east–west axis.
The related term flight time is defined by ICAO (International Civil Aviation Organization) as "The total time from the moment an aeroplane first moves for the purpose of taking off until the moment it finally comes to rest at the end of the flight", and is referred to colloquially as "blocks to blocks" or "chocks to chocks" time. [1]
In 2015, government regulators approved Air New Zealand's twin-engined Boeing 777-200ER aircraft for a 330-minute ETOPS rating (i.e. its 777 aircraft can fly a maximum 330 minutes away from the nearest diversion airport), an increase from its previous 240-minute ETOPS rating, to operate their new route between Auckland and Buenos Aires-Ezeiza ...
In the early morning of 20 May 1927, Charles Lindbergh took off from Roosevelt Field, Mineola, New York, on his successful attempt to fly nonstop from New York to the European continental land mass. Over the next 33.5 hours, Lindbergh and the Spirit of St. Louis encountered many challenges before landing at Le Bourget Airport near Paris , at 10 ...
Operators of the new railroad lines needed a new time plan that would offer a uniform train schedule for departures and arrivals. Four standard time zones for the continental United States were introduced at noon on November 18, 1883, in Chicago , Illinois, when the telegraph lines transmitted time signals to all major cities.