text: Firstly 1 day per revolution strictly isn't 24 hours since one revolution is completed in 23Hours 56minutes giving us the leap year phenomenon.\n\nIt takes 23 hours 56 minutes and 4.09 seconds for the Earth complete on revolution. \n86164.09 Seconds in total.\n\nRadians per second is the standard measurement for angular momentum (speed). The SI Unit for this is rad.s^-1\n\nEarths Angular Momentum = 2π/86164.09s\n= 7.2921159 x 10^-5 rad/s\n\nIf you want to know the avarage speed expressed in distance over time you need to find the circumference of the earth of your location. Lets use the equator as an example which is aprox 40076km.\n\n40076km x 1000 {Convert to Meters}\n= 40076000m\n\n40076000m/86164.09s \n= 465.11255 m/s (meters per second)\n= 1674 km/s (kilometers per hour)\n= 1047 miles per hour\n\n\nIf you want to know the spesific speed for you location find the latatude on a map and substitute \n\nCircumference = 2 pi r cos(x),\nwhere \npi = 3.14159...\nr = the earth's equatorial radius = 6378Km \nx = the angle of latitude. (Your location on Map)\n\nNow multiply your answer by 1000 to get distance in meters and devide by 86164.09 to get the speed in meteres per second.