{"id":9335,"date":"2024-08-25T17:26:50","date_gmt":"2024-08-25T09:26:50","guid":{"rendered":"https:\/\/tommykwan.com\/blog\/?p=9335"},"modified":"2026-02-19T15:33:12","modified_gmt":"2026-02-19T07:33:12","slug":"nav-latitude-longitude-prime-meridian-anti-meridian-position-reference-system","status":"publish","type":"post","link":"https:\/\/tommykwan.com\/blog\/aviation\/nav-latitude-longitude-prime-meridian-anti-meridian-position-reference-system\/","title":{"rendered":"[NAV] Latitude, Longitude, Prime meridian, Anti-meridian\u00a0 &#8211; position reference system"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"\" src=\"https:\/\/c.tadst.com\/gfx\/1200x675\/longitude-and-latitude-simple.png?1\" alt=\"What Is Longitude and Latitude?\" width=\"563\" height=\"286\" \/><\/p>\n<p><strong>Latitude<\/strong><\/p>\n<ul>\n<li>a position on the line of latitude<\/li>\n<\/ul>\n<p><strong>Longitude<\/strong><\/p>\n<ul>\n<li>a position on the line of longitude<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><strong>Line of latitude<\/strong><\/p>\n<ul>\n<li>imaginary lines along the earth<\/li>\n<li>parallel to each other (but perpendicular to lines of longitude)<\/li>\n<li>indicate your <strong>angular position<\/strong> north or south of equator (on equator is 0 degree)<\/li>\n<\/ul>\n<p><strong>Line of longitude<\/strong><\/p>\n<ul>\n<li>imaginary lines from pole to pole through equator<\/li>\n<li>perpendicular to lines of latitude<\/li>\n<li>the earth is divided into 360 lines of longitude &#8211; these lines is known as <strong>meridian<\/strong><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><strong>Prime meridian<\/strong><\/p>\n<ul>\n<li>a defined meridian &#8211; o degree meridian<\/li>\n<li>semi-great circle<\/li>\n<li>separates the <strong>eastern<\/strong> and <strong>western <\/strong>hemispheres<\/li>\n<li>In the northern hemisphere, the Prime Meridian passes through the UK, France and Spain in Europe, and Algeria, Mali, Burkina Faso, Togo and Ghana in Africa<\/li>\n<li>The only landmass crossed by the Meridian in the southern hemisphere is Antarctica<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><strong>Anti-meridian\u00a0<\/strong><\/p>\n<ul>\n<li>the 180 degree meridian<\/li>\n<li>opposite to prime meridian<\/li>\n<li>the basis for the <strong>International Date Line (IDL)<\/strong><\/li>\n<\/ul>\n<p><em>#antimeridian #anti meridian<\/em><\/p>\n<p>&nbsp;<\/p>\n<p>(\u5f37\u70c8\u63a8\u85a6) Also reference: <a href=\"https:\/\/www.rmg.co.uk\/stories\/topics\/what-prime-meridian-why-it-greenwich\">https:\/\/www.rmg.co.uk\/stories\/topics\/what-prime-meridian-why-it-greenwich<\/a><\/p>\n<p>Also ref: <a href=\"https:\/\/education.nationalgeographic.org\/resource\/longitude\/\">https:\/\/education.nationalgeographic.org\/resource\/longitude\/<\/a><\/p>\n<p>&nbsp;<\/p>\n<p><strong>Equator<\/strong><\/p>\n<ul>\n<li>o degree of the line of latitude<\/li>\n<li>halfway between the\u00a0<span class=\"cursor-pointer text-nowrap glossified-term\" tabindex=\"0\" data-test-id=\"glossified\">north pole<\/span>\u00a0and the\u00a0<span class=\"cursor-pointer text-nowrap glossified-term\" tabindex=\"0\" data-test-id=\"glossified\">south pole<\/span><\/li>\n<li>above the equator is the northern hemisphere (and below is the southern hemisphere)<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>Also reference: <a href=\"https:\/\/education.nationalgeographic.org\/resource\/equator\/\">https:\/\/education.nationalgeographic.org\/resource\/equator\/<\/a><\/p>\n<div class=\"embed-container\"><iframe loading=\"lazy\" title=\"Latitude and Longitude Explained (Aviation) Private Pilot Ground Lesson 24\" width=\"1170\" height=\"658\" src=\"https:\/\/www.youtube.com\/embed\/AaI_DjRwnhk?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<div class=\"embed-container\"><iframe loading=\"lazy\" title=\"The Earth and the Geographic Coordinates\" width=\"1170\" height=\"658\" src=\"https:\/\/www.youtube.com\/embed\/5jni8uZcyLg?start=257&#038;feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Latitude a position on the line of latitude Longitude a position on the line of longitude &nbsp; Line of latitude imaginary lines along the earth parallel to each other (but perpendicular to lines of longitude) indicate your angular position north or south of equator (on equator is 0 degree) Line of longitude imaginary lines from<a class=\"read-more \" href=\"https:\/\/tommykwan.com\/blog\/aviation\/nav-latitude-longitude-prime-meridian-anti-meridian-position-reference-system\/\" title=\"Read More\"> <span class=\"button default\">Read More<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[64,70],"tags":[],"class_list":["post-9335","post","type-post","status-publish","format-standard","hentry","category-aviation","category-navigation"],"_links":{"self":[{"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/posts\/9335","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/comments?post=9335"}],"version-history":[{"count":18,"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/posts\/9335\/revisions"}],"predecessor-version":[{"id":10354,"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/posts\/9335\/revisions\/10354"}],"wp:attachment":[{"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/media?parent=9335"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/categories?post=9335"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/tags?post=9335"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}