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:
“Were they to emigrate in a body to man the navies of the moon, almost every thing would stop here on earth except its revolution on its axis, and the orators in the American Congress.”
—Herman Melville (1819–1891)
“I would rather sit on a pumpkin and have it all to myself than be crowded on a velvet cushion. I would rather ride on earth in an ox cart, with a free circulation, than go to heaven in the fancy car of an excursion train and breathe a malaria all the way.”
—Henry David Thoreau (1817–1862)
““Christ, the Lord is ris’n to Day,”
Sons of Men and Angels say,
Raise your Joys and Triumphs high,
Sing ye Heav’ns, and Earth reply.”
—Charles Wesley (1707–1788)