The database of orbits and the current time is sufficient to tell you where the satellites are in an absolute sense, but what's needed is a relative position, so you also need (an estimate of) your current location; if you have an internet connection, it can use the SSID of the access point to look up the location of the AP (if that's known) in an on-line database of APs; this is probably a better estimate of your position than clicking on a map, but either one helps...