Can some1 please tell me what is the correct latitude calculation and longitude calculation point for planet earth according to Goggle maps?

Latitude and Longitude form a grid system to locate a point ON Earth.

Your Questions does not make any SENSE?

Latitude & longitude indicate a place on any map including that of Goggle map, which represents a part of planet Earth.

The starting point for all maps is 0 degrees long, 0 degrees lat. It's the intersection of the Prime Meridian and the Equator.

0 Latitude and 0 longtitude is a point about 650 miles west of equatorial Guinea (Africa) and about 370 miles south of Ghana (Africa) just on the edge of the Gulf of Guinea in the Atlantic Ocean.