I haven’t used it in a long time (couple of years?), though I’ve kept it charged all this time. I just powered it up in anticipation of a trip and noticed the time in the upper-right corner is 8:30 a.m. while it’s 7:47 p.m. where I am. How can I change it? Or does it just need to see a GPS satellite for a few minutes to set itself? Thanks for any tips.