<Table> <Tr> <Td> </Td> <Td> This article does not cite any sources . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (December 2009) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article does not cite any sources . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (December 2009) (Learn how and when to remove this template message) </Td> </Tr> <P> Diurnal motion (Latin: diurnus, lit .' daily', from dies, lit . "day") is an astronomical term referring to the apparent daily motion of stars around Earth, or more precisely around the two celestial poles . It is caused by the Earth's rotation around its axis, so almost every star appears to move along a circular arc path called the diurnal circle . The time for one complete rotation is 23 hours, 56 minutes, and 4.09 seconds (1 sidereal day). The first experimental demonstration of this motion was conducted by Léon Foucault . </P> <P> The relative direction of diurnal motion in the Northern Celestial Hemisphere are as follows: </P>

What is the daily motion of the earth