Systerms : system terms : Prime meridian

A (41) | B (23) | C (62) | D (45) | E (33) | F (34) | G (18) | H (16) | I (28) | J (2) | K (5) | L (14) | M (29) | N (17) | O (10) | P (62) | Q (10) | R (41) | S (74) | T (31) | U (12) | V (12) | W (8) | X (1) | Y (2) | Z (2)

The Prime Meridian is the 0° longitude line on Earth, located at the old site of the Royal Observatory in Greenwich, London. It was established as the global reference point for longitude and time calculation at the international conference in 1884.

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