Earth
As of 2012 the most used prime meridian for the Earth is the IERS Reference Meridian (IRM). It passes about 5.3 arcseconds east of Airy's transit circle or about 102 metres (335 ft) at the latitude of the Royal Observatory, Greenwich, London. A current convention on the Earth uses the opposite of the IRM as the basis for the International Date Line.
Read more about this topic: Prime Meridian
Famous quotes containing the word earth:
“made of earth and sea
His overcoat for ever,
And wears the turning globe.”
—A.E. (Alfred Edward)
“If there is anybody in this land who thoroughly believes that the meek shall inherit the earth they have not often let their presence be known.”
—W.E.B. (William Edward Burghardt)
“As a man-of-war that sails through the sea, so this earth that sails through the air. We mortals are all on board a fast-sailing, never-sinking world-frigate, of which God was the shipwright; and she is but one craft in a Milky-Way fleet, of which God is the Lord High Admiral.”
—Herman Melville (1819–1891)