What are the two meridians of the prime meridian?

the prime meridian is the prime meridian becauuse that is what they chose to be called.

-- the eastern one-- the western one

-- 01° 02' -- 01° 02' 03"

The antimeridian, at longitude 180° (West/East).The International Dateline is not the same thing, it skirts several areas to make time zones work better, and so doesn't have a consistent longitude.

The Prime Meridian is the imaginary line that joins the earth's north and south poles and crosses a groove in the floor of the Transit Room of the Royal Observatory in Greenwich, England. By...