The
SR-71, the B-58, the FB-111, and most spacecraft used astrotrackers for navigation.
An astrotracker is an optical device connected to a computer (analog in the airplanes and older spacecraft) that can see stars even in daylight and automatically calculate continuous multi-star position fixes which are then fed into the craft's navigation computer. This was probably the best available passive nav system available prior to GPS and laser gyros.
The navigator in the SR-71 didn't use a manual sextant.