If your longitude is West of Greenwich, UK, enter as a negative value, e.g.: -93.7108199
Because the Prime Meridian, zero degrees longitude, is set at Greenwich, England, the Great Pyramid is about 31 degrees East. (latitude 29.979167, longitude 31.134167)
The Great Pyramid is considered an ancient Prime Meridian. Some locations have a geometric relationship to this longitude.
Download the free Google Earth Pro to view locations by Latitude and Longitude: https://earth.google.com/web/