Circle of latitude circle. There are 89 integral (whole degree) circles of latitude between the equator and the Poles in each hemisphere, but these can be divided into more precise measurements of latitude, and are often represented as a decimal degree (e.g. 34.637°N) or with minutes and seconds (e.g. 22°14'26"S). There is no limit to how precisely latitude can be measured, and so there are an infinite number of circles of latitude on Earth. On a map, the circles of latitude may or may not be parallel, and their spacing may vary, depending on which projection is used to map the surface of
International Latitude Observatory International Latitude Observatory The International Latitude Observatories were a system of (originally) six observatories located near the parallel of 39° 08' north latitude. They were used to measure the variation in latitude that occurs as a result of the "wobble" of the Earth on its polar axis. The original six observatories were located in: The International Latitude Service was created by the International Geodetic Association in 1899 to study the precession, or "wobble" of the Earth's axis, and its effect on measures of latitude. Six separate observatories were created along the parallel 39° 08' north latitude. The alignment of all