Nikon D300 User Manual page 502

Figure 5-35. Position information on the GPS menu screen
Figure 5-36. GPS Info screen from Nikon GP-1 GPS unit
If you want the GPS
keep your GPS unit pointing in the same direction as the lens.
Some GPS units also contain a digital compass. Point the
GPS in the direction of your subject and give it enough time
to stabilize before you take the picture or the
information will not be accurate. This does not apply to the
Nikon GP-1 GPS unit, which has no digital compass. It only
records Latitude, Longitude, Altitude, and
Heading.
Heading information to be accurate,
502
Heading
UTC time, not the