reference meridian
C6125
concept
A reference meridian is a designated line of longitude used as a starting point for measuring geographic coordinates and establishing time zones.
All labels observed (4)
| Label | Occurrences |
|---|---|
| kilometre zero | 2 |
| meridian line | 1 |
| reference meridian canonical | 1 |
| section of the International Date Line | 1 |
Description generation (CDg)
The one-sentence description above was generated by prompting gpt-5.1 with the class name and this instruction.
Instruction
generate a one-sentence description for a given conceptual class. # Response Format Return only the sentence: "Description: [one-sentence description of the conceptional class]"
Input
Class: reference meridian
Generated description
A reference meridian is a designated line of longitude used as a starting point for measuring geographic coordinates and establishing time zones.
Instances (5)
| Instance | Via concept surface |
|---|---|
| Prime Meridian | — |
| Cassini meridian line | meridian line |
| Kilómetro Cero plaque of Spanish radial roads | kilometre zero |
| International Date Line (adjusted for Kiribati) | section of the International Date Line |
| Kilómetro Cero marker of Argentine national highways | kilometre zero |