- Source: Meridian utama
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Meridian utama (bahasa Inggris: prime meridian) adalah meridian (garis bujur) yang bujurnya terletak di 0°.
Saat ini, meridian utama yang digunakan secara internasional adalah garis bujur Greenwich, yang berawal dari Kutub Utara, melewati kota Greenwich, London Raya di Inggris, Prancis, Spanyol, Aljazair, Mali, Burkina Faso, Togo, dan Ghana, dan berakhir di Kutub Selatan.
Pranala luar
International Conference Held at Washington for the Purpose of Fixing a Prime Meridian di Proyek Gutenberg
scanned TIFFs of the conference proceedings
Prime meridians in use in the 1880s, by country Diarsipkan 2006-10-29 di Wayback Machine.
Canadian Prime Meridian