Other 3DEP products include five-meter DEMs in Alaska as well as various source datasets including the lidar point cloud and interferometric synthetic aperture radar (Ifsar) digital surface models and intensity images. These seamless DEMs were referred to as the National Elevation Dataset (NED) from about 2000 through 2015 at which time they became the seamless DEM layers under the 3DEP program and lost the NED branding. Other 3DEP products are nationally seamless DEMs in resolutions of 1/3, 1, and 2 arc seconds. The one-meter DEM is the highest resolution standard DEM offered in the 3DEP product suite. If a tile crosses two UTM zones, it is delivered in both zones. Each tile is distributed in the UTM Zone in which it lies. All bare earth elevation values are in meters and are referenced to the North American Vertical Datum of 1988 (NAVD88). Some of the major time zones in North America are: UTC-04:00: This time zone is observed in the eastern part of the continent, including the Bahamas, Bermuda, and the Virgin Islands. The spatial reference used for tiles of the one-meter DEM within the conterminous United States (CONUS) is Universal Transverse Mercator (UTM) in units of meters, and in conformance with the North American Datum of 1983 (NAD83). North America is a continent located in the northern hemisphere and divided into several different time zones. One-meter DEM surfaces are seamless within collection projects, but, not necessarily seamless across projects. USGS standard one-meter DEMs are produced exclusively from high resolution light detection and ranging (lidar) source data of one-meter or higher resolution. The elevations in this DEM represent the topographic bare-earth surface. They stay on standard time all year.This is a tile of the standard one-meter resolution digital elevation model (DEM) produced through the 3D Elevation Program (3DEP). These include Saskatchewan, Central America and Galápagos. Most of the locations in Central Time Zone observe daylight saving time. During daylight saving, Central Time Zone is only 5 hours behind Coordinated Universal Time (UTC−5). In Oceania, the Chilean Easter Island also belongs to this time zone.Ĭentral Daylight Time ĭaylight saving time occurs from the second Sunday of March to the first Sunday of November. In South America, this zone includes the Ecuadorian province of Galápagos. The six northwestern states are not part of the time zone.Ĭentral America, South America, Oceania Ĭentral Time Zone includes the Central American countries of Belize, Guatemala, Honduras, El Salvador, Nicaragua and Costa Rica. Most of Mexico belongs to the Central Time Zone.
It also includes parts of Florida, Indiana, Kansas, Kentucky, Michigan, Nebraska, North Dakota, South Dakota, Tennessee, and Texas. In the United States, the time zone includes the entire area of the states of In Canada, this time zone includes all of Manitoba, nearly all of Saskatchewan, a little part of western Ontario, and part of Nunavut (most of the Kivalliq Region and part of the Qikiqtaaluk Region). Places that are in Central Time Zone Canada In the United States, the largest city is Chicago, and the largest metropolitan area is the Chicago metropolitan area. The largest city in the Central Time Zone is Mexico City. The zone is one hour ahead of the Mountain Time Zone and one hour behind the Eastern Time Zone. In the United States and Canada, this time zone is often just called Central Time (CT).
It is called Central Daylight Time (CDT) during daylight saving time ( Summer). This time zone is called Central Standard Time (CST) during standard time ( Winter). The Caribbean region and Central America use two time zones while Canada uses six.
As such, North America observes 11 time zones between UTC-10 to UTC. It also includes Greenland, the world’s largest island and Danish territory. The Central Time Zone subtracts six hours from UTC during standard time (UTC−6) and five hours during daylight saving time (UTC−5). North America is a vast continent comprising Canada, the United States, Mexico, the Caribbean, and Central America.
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