Present novel and non-trivial system, device, and method for generating a temporary, pop-up, location-dependent clock to the pilot of an aircraft. A clock generator may be configured to retrieve approach procedure data representative of waypoint location such as the location of a final approach fix; receive navigation data representative aircraft location information; determine the passing of the waypoint inbound to the applicable airport; and perform one repetitive clock operation of a plurality of repetitive clock operations upon the passing of the waypoint, wherein an image data set is generated and provided to one or more display units. The image data set could be representative of (1) a pop-up timer displaying a counting down of time from the manually-initialized, estimated time, or (2) a pop-up stopwatch displaying a counting up of time when the estimated time is not manually initialized.