GPS is nowhere to be found

In about 10 hours I need to take off. But just now I figured out that my GPS is missing. It might be in office. I and my my family searched the entire house. It is nowhere to be seen. If it is not even in office, then I may have to postpone my trip. GPS receiver is the crux of my trip - I need it to geo tag photographs and publish digital tracks.

I need to get good sleep, but how can I sleep now??? It is funny - I need GPS to find out location info. Now how do I find the location info of my GPS?

Day 0, 0km