I’m struggling to add coordinates into my satnav. How do I work out what’s east and west or plus or minus (+ or -)?
Assuming you’re travelling in the northern hemisphere and the numbers are in decimal (rather than degrees, minutes and seconds), all coordinates east and west (longitude) are measured from the Prime Meridian. This is a line, effectively through Greenwich, which is nominated as 0 degrees, neither east or west.
Where longitude is denoted with a minus it means west of the Prime Meridian and a plus symbol denotes an east direction.Read more »