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:
“I set out on this ground, which I suppose to be self evident, “that the earth belongs in usufruct to the living”: that the dead have neither powers nor rights over it.”
—Thomas Jefferson (1743–1826)
“Grace! ‘tis a charming Sound,
Harmonious to my Ear!
Heav’n with the Echo shall resound,
And all the Earth shall hear.”
—Philip Doddridge (1702–1751)
“O, mickle is the powerful grace that lies
In plants, herbs, stones, and their true qualities;
For nought so vile that on the earth doth live
But to the earth some special good doth give.”
—William Shakespeare (1564–1616)