Living south of the equator, I see you have most of us beat for southernmost point. But it’s even more interesting (to me, anyway) that Florida is the furthest west you’ve been. 
It really surprised me too, my mental image of the Americas is more “vertical” than the real thing.
Turns out North America is North-West of South America.
I had that same mental image for a long time. Last year I flew from California to Ecuador, and when booking flights my connecting options were Houston or Miami. In my mind Miami felt like a circuitous route, one that would take me too far east and require backtracking to my destination. But it really isn’t; a flight from Miami to Quito would travel more or less due south. I still went with the Houston option for other reasons, but going via Miami would have been reasonably direct geographically.
Hey! Quit following me.
Before traveling to Orlando(81.37W) my westernmost point was in fact Quito (78.51W)
South: Some point in Antarctica, below the Antarctic Circle. For actual inhabited towns, Ushuaia 54°48′7″S 68°18′11″W
North: Bergen, Norway 60°23′22″N 5°19′48″E
East: Abu Dhabi, UAE [24°28′N 54°22′E
West: Bangkok, Thailand 13°45′09″N 100°29′39″E
North: Grande Vallee, Quebec
South: Key West, Florida
East: Louisbourg, Nova Scotia
West: Kerrville, Texas (this was just a couple of months ago)
Awww! Beat me by a few seconds!
In determining the Longitude I basically picked what looked to be the westernmost point on the road leading to the canyon (which looks to be a scenic overlook on the western rim) and decided that was probably the farthest west I’ve been, and right clicked it in Google Maps to find the coordinates.
I’ve driven around the southern tip of the island at least twice—the first time was back in 2018.
Ok, you were there first. I’ll be going back in two weeks, maybe I’ll dive out just a bit more… 
Regarding the alignment of North & South America, one of my favorite trivia questions was “Traveling due south from New Orleans, LA, where in South America would you make landfall?” The answer - Depending on exactly where in New Orleans you departed from, you might hit Santa Fe Island in the Galapagos (less than 4.5 miles wide). Otherwise, you would miss South America entirely to the west.
You beat me for southernmost spot on Antarctica.
Did you work down in Antarctica? Reason I ask is that rather little of the tourist stuff gets far enough south on the peninsula to actually break the Antarctic Circle. At least not now; may’ve been different in the past. I’m not suggesting you’re wrong or BSing; just curious what cool (heh 
) stories you might have to share.
I beat you to southern-most town by a smidgen. Puerto Williams Chile is on the south bank of the Beagle Channel that Ushuaia is on the north bank of. The town’s center is roughly -54.9, -67.6, so 7-10 nautical miles south of Ushuaia.
My daughter spent two years in Peru in the Peace Corps. When we flew to visit her, we landed in Lima. I can remember looking at Google Maps and being surprised to realize that Lima (77.03 W) is almost directly due south of Washington DC (77.04 W).
I visited Peru a few years ago, and I was delighted to learn that where we were going would be on Eastern time. Even tho our flights added-up to like 8 hours to get there, it was only 3 hours different from Pacific time. No jet lag, really!
Have a good trip! I’ve been there three times, most recently in 2023.
I’m always very wary about strong currents, so I don’t think I’d dive at the extreme north or south ends of the island (much less the rough, windward east side).
Speaking of diving off the coast, I guess I was a little further west than Waianae in Hawaii, since we did a boat dive west of there.
That’s what the guides said and looking at the map we did go there…but the weather was hurricane-level so we never made it ashore.
The north is closed for diving right now. You can still drive through the park, but no diving. There was no current when I was there last year.
N Longyearbyen, Svalbard +78
S Jindabyne NSW -36
E Brisbane QLD +153
W Dillingham Airfield, HI -21
That’s the latitude (and it’s positive, i.e. north latitude). The longitude is -158° (158°W).