You may notice that you can't delete AC folder, but that's alright. 5- Restart your computer. 6- Now, were going to re-register Microsoft Edge in your account. Open the Start menu, search for Windows PowerShell, right-click it from the result, and select Run as administrator. 7- Type the following command and hit Enter : cd C:\Users\UseYourUsername.
A geodetic datum is an abstract coordinate system with a reference surface (such as sea level) that serves to provide known locations to begin surveys and create maps. In this way, datums act similar to starting points when you give someone directions.
Meades Ranch Triangulation Station, fundamental station for the North American Datum of 1927. The North American Datum (NAD) is the datum now used to define the geodetic network in North America. A datum is a formal description of the shape of the earth along with an anchor point for the coordinate system.he North American Datum of 1983 is based on a newer defined spheroid (GRS 80); it is an Earth-centered (or  geocentric ) datum having no initial point or initial direction.