Come on hippy... the crystal ball conked?
Its a GPS. And because borz can't be bothered to link a Data Sheet here it is:
http://www.usglobalsat.com/download/47/em408_ug.pdf
Please borz, if you want quick replies then provide information.
Help us to help you.
I didn't know you could adjust the time zone?
The usual UTC, so a smart programmer would include zone adjustments in his/her code
Why not contact the Manufacturers ?
Get it straight from Horse's Mouth so to speak.