For some reason crossing magical lines never gets tiring. I've crossed the Equator and the Prime Meridian - and I get excited every time I see the GPS zero out! Someday I'll pass the International Dateline....there are a couple of other magic lines that I'd like to cross....but I'll save that for another post. On my morning watch we passed the Prime Meridian - the line of longitude that marks East and West and runs through Greenwich. I snapped a photo just after passing through to the West.