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Informally, specifying a geographic location usually means giving the location's latitude and longitude. The numerical values for latitude and longitude can occur in a number of different units or formats: [2] sexagesimal degree: degrees, minutes, and seconds : 40° 26′ 46″ N 79° 58′ 56″ W
At 30° a longitudinal second is 26.76 m, at Greenwich (51°28′38″N) 19.22 m, and at 60° it is 15.42 m. On the WGS 84 spheroid, the length in meters of a degree of latitude at latitude ϕ (that is, the number of meters you would have to travel along a north–south line to move 1 degree in latitude, when at latitude ϕ), is about
For example, the green arrows show that Donetsk (green circle) at 48°N has a Δ long of 74.63 km/° (1.244 km/min, 20.73 m/sec etc) and a Δ lat of 111.2 km/° (1.853 km/min, 30.89 m/sec etc). When the Earth is modelled by an ellipsoid this arc length becomes [ 41 ] [ 42 ]
A perspective view of the Earth showing how latitude ... while the length of 1 second of latitude is 30.8 m or ... lat Δ 1 long; 0° 110.574 km: 111.320 km 15° ...
The 30th parallel north is a circle of latitude that is 30 degrees north of the Earth's equatorial plane.It stands one-third of the way between the equator and the North Pole and crosses Africa, Asia, the Pacific Ocean, North America, and the Atlantic Ocean.
Common chart datums are lowest astronomical tide (LAT) [1] and mean lower low water (MLLW). In non-tidal areas, e.g. the Baltic Sea , mean sea level (MSL) is used. [ 2 ] A chart datum is a type of vertical datum and must not be confused with the horizontal datum for the chart.
Last version to support Mac OS X 10.6 Snow Leopard and Mac OS X 10.7 Lion; 7.3 July 2017 Google Earth Pro became the standard version of the desktop program. (A free license key was also publicly provided by Google for all the earlier Pro versions.) [67] The desktop application continues to be Google Earth Pro 7.3, with infrequent updates. 8.0
The maximum "northing" value is about 9 300 000 meters at latitude 84 degrees North, the north end of the UTM zones. The southern hemisphere's northing at the equator is set at 10 000 000 meters. Northings decrease southward from these 10 000 000 meters to about 1 100 000 meters at 80 degrees South, the south end of the UTM zones. Therefore, no ...