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03-19-14, 11:11 PM   #1
Tom Stormcrowe
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Draw a Line Through the center of the Earth.....

from your current position and you get the antipodal position, or reciprocal of your location on the other side of the planet. Essentially, it's 180 degrees from your current position, no matter which direction you travel, like the North and South Poles are antipodes.

My antipode, here in South Florida calculates to 27 degrees, 16'516"South latitude, and 99 degrees, 36'58" East.

I'd be out in the Indian Ocean, SW of Australia, about 1,134 miles from the beach in about 14,954 feet of water for my antipodal.

Where are you? To calculate this, you simply transpose the latitude from north to south and then subtract 180 from your longitude. It's not as hard as you might think.

Wolfram Alpha has a neat calculator you can use if you don't want to crunch the numbers yourself, but if you've ever wondered what is exactly on the opposite side of the Earth, relative to you, here's your chance.
antipode of current location - Wolfram|Alpha

As you can tell, I'm one of them-thar math geeks.....fellow geeks, let your geek-freak flag fly!
Attached Images
 my antipode.gif (9.8 KB, 3 views)
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Last edited by Tom Stormcrowe; 03-19-14 at 11:18 PM.

 03-19-14, 11:28 PM #2 rm -rf don't try this at home.     Join Date: Jan 2006 Location: N. KY Bikes: Posts: 4,370 Mentioned: 5 Post(s) Tagged: 0 Thread(s) Quoted: 338 Post(s) I remembered seeing a page that does this. Google found it: Map Tunneling Tool. Portugal <--> New Zealand. ~~~~ I have the free SkEye app on my android tablet (or use it on android phones). Hold the tablet up to the sky, and it shows a sky map in that direction. But it's weird to aim it at the ground and see constellations and planets over on the other side of the world. Last edited by rm -rf; 03-19-14 at 11:43 PM.
03-20-14, 08:29 AM   #3
jbchybridrider
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Quote:
 Originally Posted by rm -rf I remembered seeing a page that does this. Google found it: Map Tunneling Tool. Portugal <--> New Zealand. ~~~~ I have the free SkEye app on my android tablet (or use it on android phones). Hold the tablet up to the sky, and it shows a sky map in that direction. But it's weird to aim it at the ground and see constellations and planets over on the other side of the world.

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03-20-14, 09:00 AM   #4
bigbenaugust
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Quote:
 Originally Posted by Tom Stormcrowe from your current position and you get the antipodal position, or reciprocal of your location on the other side of the planet. Essentially, it's 180 degrees from your current position, no matter which direction you travel, like the North and South Poles are antipodes. My antipode, here in South Florida calculates to 27 degrees, 16'516"South latitude, and 99 degrees, 36'58" East. I'd be out in the Indian Ocean, SW of Australia, about 1,134 miles from the beach in about 14,954 feet of water for my antipodal. https://maps.google.com/?q=27.281+S,...289063&t=k&z=2 Where are you? To calculate this, you simply transpose the latitude from north to south and then subtract 180 from your longitude. It's not as hard as you might think. Wolfram Alpha has a neat calculator you can use if you don't want to crunch the numbers yourself, but if you've ever wondered what is exactly on the opposite side of the Earth, relative to you, here's your chance. antipode of current location - Wolfram|Alpha As you can tell, I'm one of them-thar math geeks.....fellow geeks, let your geek-freak flag fly!
Not terribly far from where that 777 may have ended up... hmmm...
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 03-20-14, 11:13 AM #5 genec genec     Join Date: Sep 2004 Location: West Coast Bikes: custom built, sannino, beachbike, giant trance x2 Posts: 25,566 Mentioned: 14 Post(s) Tagged: 0 Thread(s) Quoted: 2987 Post(s) Well so much for digging to China... Looks like I'd end up draining the Indian Ocean.
 03-20-14, 11:39 AM #6 ahsposo  Titanic Member     Join Date: Jan 2010 Location: Deep in the North Atlantic Bikes: A Home Built All Rounder, Bianchi 928, Specialized Langster, Dahon Folder Posts: 7,073 Mentioned: 6 Post(s) Tagged: 0 Thread(s) Quoted: 1105 Post(s) I read a novel (Generation A by Douglas Coupland) that had a minor theme of anti-podes. Coordinated through social media two people in the rare places on earth where you could do this, like Spain and New Zealand, would simultaneously place slices of bread at predetermined antipodal GPS coordinates thereby making an Earth sandwich. They would video this and post the paired videos. __________________ 3ALARMER IN 2020 ! ...............................................Put 'em all in Texas. Last edited by ahsposo; 03-20-14 at 11:42 AM.
 03-20-14, 11:40 AM #7 rumrunn6 Senior Member     Join Date: Jul 2008 Location: 25 miles northwest of Boston Bikes: Bottecchia Sprint Posts: 17,574 Mentioned: 21 Post(s) Tagged: 0 Thread(s) Quoted: 1273 Post(s) I'm a little further south than the OP, so also in deep water. hahaha very interesting
 03-20-14, 02:12 PM #8 pgjackson Senior Member     Join Date: Oct 2010 Location: Gulf Breeze, FL Bikes: Rossetti Vertigo Posts: 3,846 Mentioned: 0 Post(s) Tagged: 0 Thread(s) Quoted: 0 Post(s) Middle of the Indian Ocean...well that was a letdown.
 03-20-14, 02:27 PM #9 StupidlyBrave  Chepooka     Join Date: Sep 2006 Location: South Central PA Bikes: 1990 Trek 1400 7spd; 2001 Litespeed Arenberg 10 speed Posts: 1,168 Mentioned: 0 Post(s) Tagged: 0 Thread(s) Quoted: 58 Post(s) It refused to give me an answer. Try it yourself.
03-20-14, 02:31 PM   #10
RPK79
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 Originally Posted by genec Well so much for digging to China... Looks like I'd end up draining the Indian Ocean.
Everything I have ever thought has been a lie.

 03-20-14, 02:33 PM #11 chewybrian  "Florida Man"     Join Date: Mar 2008 Location: East Florida Bikes: '16 Bob Jackson rando, '66 Raleigh Superbe, 80 Nishiki Maxima, 07 Gary Fisher Utopia, 09 Surly LHT Posts: 1,642 Mentioned: 5 Post(s) Tagged: 0 Thread(s) Quoted: 501 Post(s) A couple days swim from Kalbarri, Australia for me. I knew I should have taken that left turn at Albequerque. __________________ Campione Del Mondo Immaginario
03-20-14, 02:43 PM   #12
colorider
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 Originally Posted by pgjackson Middle of the Indian Ocean...well that was a letdown.
me too

03-20-14, 03:24 PM   #13
bigbenaugust
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 Originally Posted by RPK79 Everything I have ever thought has been a lie.
I'm not sure you could dig in a completely straight line. Maybe you'd end up in China anyway.
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 03-20-14, 05:40 PM #14 JonnyHK  Senior Member     Join Date: Sep 2008 Location: London Bikes: Baum Romano, Colossi xCr, Homemade Bamboo! Posts: 2,322 Mentioned: 3 Post(s) Tagged: 0 Thread(s) Quoted: 110 Post(s) Hong Kong > northern Argentina
 03-20-14, 09:50 PM #15 rm -rf don't try this at home.     Join Date: Jan 2006 Location: N. KY Bikes: Posts: 4,370 Mentioned: 5 Post(s) Tagged: 0 Thread(s) Quoted: 338 Post(s) Gravity Trains. These journeys, by gravity fall, all take the same amount of time, even if the line doesn't go through the center of the earth. For example, The Alameda-Weehawken Burrito Tunnel from the article: Who can imagine New York City without the Mission burrito? Like the Yankees, the Brooklyn Bridge or the bagel, the oversize burritos have become a New York institution. And yet it wasn’t long ago that it was impossible to find a good burrito of any kind in the city. As the 30th anniversary of the Alameda-Weehawken burrito tunnel approaches, it’s worth taking a look at the remarkable sequence of events that takes place between the time we click “deliver” on the burrito.nyc.us.gov website and the moment that our hot El Farolito burrito arrives in the lunchroom with its satisfying pneumatic hiss. ... The tunnel opened to great fanfare in 1933, with a congratulatory message in Morse Code flashed by powerful searchlight from the San Francisco end to waiting dignitaries on the New Jersey side. It was already obsolete. The first regular mail shipments sent from San Francisco in the spring of 1934 had to compete with the sophisticated air mail system that had grown up during the tunnel’s long construction. ... The globetrotting Cavanaugh was a fanatic of the recently-invented Mission burrito but bemoaned being unable to get it anywhere outside of San Francisco. Examining blueprints of the defunct mail tunnel on a flight home to New York, Cavanaugh became intrigued by the coincidence in size between a foil-wrapped burrito and the diameter of the old transcontinental mail tubes. By the time the plane landed, he had come up with an audacious plan. Cavanaugh realized that the intense heat of the transit that had so beleaguered mail service would actually work to his advantage in a burrito tunnel. The burritos could be stored frozen on the Western end and arrive fully heated through in New Jersey. Furthermore, advances in electrical engineering meant that containers would no longer have to be propelled by compressed gas. The burritos already came conveniently wrapped in aluminum foil - it would be trivial to accelerate them with powerful magnets. Last edited by rm -rf; 03-20-14 at 09:55 PM.
 03-22-14, 02:24 PM #16 skidder Journeyman Nerd   Join Date: Sep 2012 Location: Orange County, California Bikes: A lot . . . from classic crap to modern mediocraty Posts: 592 Mentioned: 1 Post(s) Tagged: 0 Thread(s) Quoted: 103 Post(s) I remember doing that back in school. The Los Angeles area ended up being in the western Indian Ocean, south of Maurituis/east of Cape Town, South Africa. I knew it wasn't in China (China's above the equator) but my guess at it being near Perth, Western Australia turned out wrong, too.
03-22-14, 03:03 PM   #17
skijor
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 Originally Posted by StupidlyBrave It refused to give me an answer. Try it yourself.
I can relate.

 03-22-14, 05:43 PM #18 RaleighSport  Hogosha Sekai     Join Date: Jun 2011 Location: STS Bikes: Leader 725, Centurion Turbo, Scwhinn Tempo, Schwinn Premis, GT Tequesta, Bridgestone CB-2,72' Centurion Lemans Posts: 6,599 Mentioned: 8 Post(s) Tagged: 0 Thread(s) Quoted: 39 Post(s) o.O Way the hell off the southern coast of Madagascar in the Indian ocean.. any by off the coast I mean that's the closest land mass choice. __________________ Play stupid games, win stupid prizes.
 03-24-14, 01:52 PM #19 dstrong  Senior Member     Join Date: Aug 2005 Location: Awesome, Austin, TX Bikes: Specialized Roubaix, Interloc Impala, ParkPre Image C6 Posts: 4,049 Mentioned: 1 Post(s) Tagged: 0 Thread(s) Quoted: 127 Post(s) Seems like a lot of the continental U.S. ends up in the Indian Ocean. __________________ 2014 Specialized Roubaix2003 Interloc Impala2007 ParkPre Image C6 (RIP)
 03-24-14, 07:14 PM #20 Zedoo Entropy on Wheels     Join Date: Jun 2012 Location: The Geography of Nowhere Bikes: several Posts: 285 Mentioned: 0 Post(s) Tagged: 0 Thread(s) Quoted: 222 Post(s) I don't need a site. I pick up a globe. My antipode is that blue spot.
 03-24-14, 07:40 PM #21 sk0tt Senior Member     Join Date: Jul 2007 Location: Perth, Western Australia Bikes: Posts: 356 Mentioned: 0 Post(s) Tagged: 0 Thread(s) Quoted: 2 Post(s) Bermuda
03-24-14, 08:27 PM   #22
gnome
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 Originally Posted by chewybrian A couple days swim from Kalbarri, Australia for me. I knew I should have taken that left turn at Albequerque.
If the Great White sharks don't get you first.
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 03-24-14, 08:30 PM #23 gnome  shaken, not stirred.     Join Date: Aug 2006 Location: The Shaky Isles. Bikes: I've lost count. Posts: 3,687 Mentioned: 16 Post(s) Tagged: 0 Thread(s) Quoted: 447 Post(s) Northern Spain. __________________ Get a bicycle. You will not regret it if you live. ~Mark Twain, "Taming the Bicycle"vBulletin: snafu