GMT baby!…I’m on my way home on a train and my sides hurt cos I’m grunting trying to hold the laugh in so people don’t think I’m crazy…very informative and entertaining episode😂
The passenger steamer SS Warrimoo was quietly knifing its way through the waters of the mid-Pacific on its way from Vancouver to Australia. The navigator had just finished working out a star fix and brought Captain John DS. Phillips, the result. The Warrimoo’s position was LAT 0º 31’ N and LONG 179 30’ W. The date was 31 December 1899. “Know what this means?” First Mate Payton broke in, “We’re only a few miles from the intersection of the Equator and the International Date Line”. Captain Phillips was prankish enough to take full advantage of the opportunity for achieving the navigational freak of a lifetime. He called his navigators to the bridge to check & double check the ship’s position. He changed course slightly so as to bear directly on his mark. Then he adjusted the engine speed. The calm weather & clear night worked in his favor. At mid-night the SS Warrimoo lay on the Equator at exactly the point where it crossed the International Date Line. The consequences of this bizarre position were many: The bow of the ship was in the Southern Hemisphere & in the middle of summer. The stern was in the Northern Hemisphere & in the middle of winter. The date in the aft part of the ship was December 31, 1899. The date in the forward part of the ship was January 1, 1900. The ship was therefore concurrently in: two different days, two different months, two different years, two different seasons and in two different centuries. Euller, John (Sept.1953). "A freak of navigation". Ships and the Sea. 3. p. 18
That's a pretty sweet story. Kind of like being on the four corners in the US. However, I wouldn't say it was in two different centuries since the new century starts in '01 since there wasn't a year zero.
Same century. There was no year zero so the first century (i.e. 100 years) is from 1 to 100. The last year of all A.D. centuries is of the form digit+0+0. For example: 1900.
You guys have shown me how much I truly love science. You have taught me so much in the recent years. I have decided to quit my factory job and go back to college to pursue a science degree. Thanks for all you do, and inspiring me to pursue something I love!
If you want to understand the IDL, don’t watch this. The thumbnail is wrong. And at about 5:00 minutes, they get the Tuesday/Wednesday thing the wrong way round.
I think Neil has it backwards. If you travel west chasing the sun, you'll experience one less day as you will have revolved around the earth's axis one less time than everyone else. That's why you have to add 24 hours when you travel west across the international date line.
I think you are correct. Additionally, I think Magellan went West and Antonio Pigafetta would have thought it was Tuesday when he got back and everyone would have told him it was Wednesday.
Please note the thumbnail for this explanation is incorrect: If the region of Asia marked to "Today" is marked correctly, then the region of North America marked "Tomorrow" should be marked either "Yesterday" or "Earlier Today." Under no circumstance can that region be "Tomorrow."
There is a logical error Neil made: Magellan’s scolar would have believed he was in the past compared to the people who stayed home. So he would’ve thought it was Tuesday while the people said it was already Wednesday.
I was confused too. I remember reading a work out of fiction where a guy made a wager with people back at home that he could go round the world in 80 days. He kept readjusting his timepiece but his servant didn't. Getting back home he thought he had lost the wager by a day only for his servant to tell him they were right in time. Guy walked to the pub just before the clock chimed the exact hour.
Just a few things for those that can be curious: - Fernando Magallanes was portuguese, but he did the trip to the orders of the Castillian king. It's almost sure that he was ordered as a castillian citizen before starting the journey. - The jurney started with 5 ships - They went from Spain (Seville IIRC) down the Guadalquivir river to Sanlucar de Barrameda and then heading west to America, were they discovered the Strait of Magellan. They knew there were another sea (the South Sea in that era). The first eurepean to see that "sea" was Vasco Nuñez de Balboa. - One of the ships shinked before the strait discovery. - Another ship returned to Spain also before the discovery, because many sailors thhought that that strait existed. - They called the "South sea" Pacifico, because when they went into it the water was very calm. They didn't know anything about that sea, and they sailed for several months without seing land. Many died or fell ill with scurvy. - After sailing beyond Phillipines, one ship had to be abandoned due ti its bad conditions andl almost shink for being loaded too much with species. - One more ship was captured by the portuguese army. The crew spent many years in prison doing forced labor and most died in prison. - Magellan died in a Phillipine island. He was replaced by another portuguese captain but for several reasons I can't explain here, he was replaced and finally it was Juan Sebastián Elcano who took the ship back to Spain. It's a very interesting story that is worth reading,.
3:43 That island, Mr. Tyson, is Mactan, Cebu which we now know is part of present day Philippines. The "native" that killed Magellan is named, Lapulapu. This fierce native is now honored for being our first National Hero.
going north to south or vice versa in the same time zone can result in having to set your watch ahead or back 1 hr depending on the state/province you are entering when Daylight savings is in effect. I imagine that can happen in the states, when the time zone lines run horizontal along a state line for a while. Fortunately particularly in Western Canada most of the provincial boundaries are north south.
As a child, I didn't understand how the international dateline worked, so I was convinced that you could speed up time by moving with the rotation of the earth and slow down time by moving against the rotation of the earth. I also was also confused why you couldn't travel back in time by moving against the rotation of the earth at a speed faster than the earth was rotating.
I worked at a TV station in Boise, Mountain Time zone. East, Central time zone played shows live. West (Pacific Time) had their own feed. Mountain Time Zone, we had to tape delay shows by 1 hour so prime time didn't start at 6pm.
Spent a season crab fishing out of Dutch Harbor, Alaska. It's about an hour away from the International Date Line at the end of the Aleutian islands. Or as they say there, "It's not the end of the world but you can see it from here." Good times. ;-P
The image for this video has "today" and "tomorrow" backwards on each side of the IDL Western Pacific/Kamchatka/China start tomorrow first ... and CONUS (today) lags behind UTC/GMT/Zulu time.
👍🏿👍🏿👍🏿👍🏿👍🏿👍🏿👍🏿👍🏿👍🏿👍🏿👍🏿👍🏿👍🏿👍🏿👍🏿👍🏿 I have been obsessed for years with this topic because it evidences the existence of going forward in time --- and of going back in time. End of debate, right? And since all of Earth orbits nonstop, by remaining stationery you travel in both space and time like riding a merry-go-round.
I've been thinking about sundials, and what the error bars are for each aspect of them. So, can you point them to true North? Can you get the precise angle of the gnomon? If the dial is flat on the ground, then how do you warp the numbers around? And what about my position in my timezone (plus daylight savings)? Then there is the analemma and how much does that change the time? (although I can't really eyeball anything to more than 2 and a half digits.) I suspect that pointing true North is the most important adjustment.
Being Spanish, and as much as I appreciate NDT’s knowledge and communication ability, I sort of resent that he does not get his facts straight before explaining things and thus illustrates his videos with wrong graphics. Magellan was Portuguese, but he left from Spain, the entire trip financed by Spanish money. Elcano, who took over the expedition commandment after Magellan’s death, also return to Spain three years later, after completing the circumnavigation that was Magellan’s dream.
The configuration of time zones in the U.S. was *heavily* influenced by the railroad industry in the 19th century, in order to better manage departures and arrivals. It is likely at least part of the reason why the Mountain Time zone is the shape it is.
I love this series but the video really confused me about the IDL (and time zone math) which I sort of thought I understood before. NdT notes the voyage was all westward returning from the east (as I also learned in school), but the animated map at 4:50 seems to imply an eastward voyage instead. (It's not entirely clear, as the map blurs. But I'd argue it's a confusing graphic snippet.) More importantly, NdT notes at 5:00 or so that Magellan's surviving crew thinks it's Wednesday when they arrive, but the locals assure him it's really Tuesday. As I read the history before, however, the "mistake" went in the other direction. Magellan's surviving crew indeed thought it was Wednesday, but in fact it was Thursday per the locals. So, the crew had mistakenly lost a day, not mistakenly gained one, by their westward circumnavigation. (I understood that when one crosses the IDL going west one adds a day, avoiding the "loss" of westward travel. Going east over the IDL, one subtracts a day. Or have I got that one wrong too?) This is the quote I found of Pigafetta's log: "“On Wednesday, the ninth of July [1522], we arrived at one these islands named Santiago, where we immediately sent the boat ashore to obtain provisions. [...] And we charged our men in the boat that, when they were ashore, they should ask what day it was. They were answered that to the Portuguese it was Thursday, at which they were much amazed, for to us it was Wednesday, and we knew not how we had fallen into error. For every day I, being always in health, had written down each day without any intermission. But, as we were told since, there had been no mistake, for we had always made our voyage westward and had returned to the same place of departure as the sun, wherefore the long voyage had brought the gain of twenty-four hours, as is clearly seen.” Other quotes from logs of similar voyages at: webspace.science.uu.nl/~gent0113/idl/idl_discovery.htm. NdT is much, much smarter than me, so I likely am the one missing something here. Help!
The thumbnail illustration and the graphic at the start of the video seems to be wrong. Left of the dateline is today. Right of the dateline is YESTERDAY not TOMORROW
Around 2007 or 2008, before the economy crash. I was planning a vacation to Australia. On my return flight, I was going to land at the same time and day that i had left. ALL thanks to the international date line.
If you go westward when crossing the International Dateline you will go to sleep on say Tuesday night and wake up on Thursday morning when traveling east you go to sleep on say a Saturday night and wake up Saturday morning. Also, when stationed in Guam in the U S Navy to call commands in Hawaii you had to adjust both time and date, if it was noon in Guam it was if I remember correctly 4 PM in Hawaii the day before so no calling on Mondays!
The International Date Line serves as the imaginary boundary where one calendar day shifts to the next, allowing for consistent timekeeping around the globe. It plays a crucial role in coordinating time zones and international travel. How might changes in global communication and travel impact the relevance or management of the International Date Line in the future?
Time zones should be on longitude lines 15 degrees apart. The boundaries are only to accommodate civilian needs. In the United States, the only large cities that line up and agree with Solar time are Memphis and Denver. Memphis is at 90 Degrees and Denver is at 105 degrees.
Magalhães was Portuguese but depart from Spain. I am Portuguese and very proud off Magalhães Great Men 🇵🇹 after that we divide the world in half between Portugal and Spain from Brazil to Philippines to Spain from Philippines to Brazil to Portugal. Portugal Portugal once have the biggest Empire of the world
I do reconstructing time zones in shorthand. I know the Eastern States of Australia are "later" than the West and that solves that. My tme zone is GMT+8, Perth, Wester Australia
Simple thought experiment. You leave Portugal on Tuesday, at precise noon,headed west traveling at such a rate of speed that you return 24 hours later. The sun will be overhead the entire time. The scholar would mark 0 days passing so he would say that it is still Tuesday. People in Portugal would say it is Wednesday (correctly). So Neil does have it backwards in this video.
space and time are connected. as space gets smaller time moves faster. keeping everything moving at 9.87m/s. watch the lines shrink in direct relationship to the distance apart.
Chuck was right in his first answer, Phileas Fogg won his bet to make it back to the club by midday because they realized having crossed the Date Line it was the 80th day and not the 81st day after all. Exactly the same experience as Mr Pigafetta.
And to think, that if you started celebrating your birthday at midnight in the first dateline timezone, and moved westwards in an aeroplane in order to stay in a zone so you could continue to celebrate your birthday until the very last second of that day, you could continue to celebrate your birthday for 50 whole hours straight!! 😮👌😁👌
The length of a 'Calendar Day' on Earth is Relative! 😮 Relative to if you are moving or not, in which direction you are moving, and what your starting and finishing location is, and can therefore last as long as 50 hours! 👌😁👌
Thumbnail is wrong I guess? As it’s always later in Asia than in North America, or the dawn arrives in Asia before it does in NAm. So ‘today’ and ‘tomorrow’ should be switched, right?
UTC +10 here on the Australian east coast. Just as a nitpick, the thumbnail bothers me because it shows the today and tomorrow in reverse of what it should. As Neil mentions near the beginning of the video that sunrise happens in the east first and then progressively move further westward from there. This means that people just west of the international date line will experience midnight, ie. a new day, first and then people further west will gradually join them in that new day. This video shows really well when different places on earth transition to a new day: th-cam.com/video/vta6uXkieh8/w-d-xo.html
So the Magellan crew actually shortened the length of their days by traveling in the opposite direction of the rotation of the Earth relative to it's orbital path around the sun which defines a day. Do I have that right?
I live in Montana, Mountain Standard Time, during the Summer time Mountain Daylight Time. I lived in Arizona for 32 years. Mountain Standard Time all year round. Daylight time doesn't exist in Arizona because who wants spend another hour at 115 degrees. You'll see me next Tuesday. Is that my next Tuesday, or your next Tuesday.
In Jewish Law, there is an argument as to exactly where the International Date Line is located. There are 3 basic approaches. This has major ramifications for those who are Sabbath observant. I have done the research, and it is fascinating
Am I the only one who giggled when Neil said "at the end of the day..."? They didn't even bat an eye, while I thought Neil was bringing the cheese...lol
😁 Everyday is the same it's just a day, dates and dateline are used for making people, things, events meet. Animals don't need compass or clock yet they can be very accurate in meeting your time. Animals doesn't care what age are they, when they're old they know they're old 😁.
Isn't the thumbnail incorrectly labeled? Shouldn't the right side (Americas) be "Today" and Asia be "Tomorrow," right? Like, the land of the rising sun and the far east start the international dateline.
I'm from the Philippines and I'd like to add that Ferdinand Magellan died in the Philippine islands when he was trying to convert the native Filipinos to Christianity and got involved in the rivalry between two tribal kings. Magellan tried to convert one of those tribal chiefs by force. He had around 60 troops while the resisting natives numbered 1,500 in the Battle of Mactan.
Sorry guys but this time you made a misstake. They thought it was Wednesday but it was Thursday. They "lost a day"! 😉 I also missed a bit more explanation this time, beacuse I think many would ask, how is it, that Magellan's ship lost a whole day, was the time passing faster for them? Here is my explanation for those, who don't understand how it works. If you travel towards west, your days are going to be longer, beacuse you travel in the same direction as the sun goes (opposit way of the earth rotation). You are going to see the sun longer every day, because you travel "togeher" with the sun, so as a result your days are going to be longer than 24 hours. The sunset is also happening somewhat later for you, and the the sunrise too. Here is an example. Lets assume we have a time period of 10 days that means 240 hours to travel around the world towards west. But as I said for those who are travellig, the days are going to be longer, for exampe instead of 24 hours 26.67 hours in average. Now if you divide that original 240 hours (10 normal days) with 26.67 you get 9 nine days instead of 10. That is how for Magellan's crew seemingly passed 1 day less, because their days were longer than 24 hours, still the time was passing the same way for everybody.
@@TropicalVibesHD I was thinking about the missing detailed explanation, and I thought I was really dumb, because it didn't fit to the story explained in the video. I double-checked the facts and it turned out that I was right. However, it's only those who do nothing that make no mistakes. Much more important is the story and the scientific thoughts behind it.
I was thinking the same thing. If the man on the boat logged each day at around noon, the sun would pass overhead 1 less time for him than someone who stayed in Portugal. The traveler would have slightly longer days and therefore, fewer of them. Easy mistake to make, even for the best and brightest.
When I was a young kid my father told me a story about the international dateline. Dad served in the 13th Army Air Corp in the South Pacific. In one of his many bombing missions (he was a tail gunner in a B-24 Liberator), the squadron took off late on a Tuesday night, bombed their target on Thursday, and returned to base on Wednesday.
I appreciate Chuck so much in these episodes. In addition to his quick wit I love his intellectual curiosity, which brings out the joy in Dr. Tyson, who is an incredible science educator. Chuck sets a great example for laypeople like me who are interested in science and willing to learn many new things.
Well there are at least few mistakes: 1. Fernando Magellan spelled without D at the end 2. He didn't make it: dead somewhere near Indonesia. 3. They traveled westwards, not as it shown in the video 4. They actually should have gained a day and thought it was Monday instead of Tuesday, not Wednesday
@@blue9multimediagroupMaybe from Magellan’s name? 😅 His name was Fernão de Magalhães in Portuguese, translated to Fernando de Magallanes in Spanish. Fernand de Magellan in French. I guess English speakers use Ferdinand because « Fernand » isn’t a name they’re used to, but it’s certainly closer to his original name. 😊
This drove me crazy in the last couple of minutes. If you go west fast enough (as fast as the Earth rotate in your current location), you will have eternal noon, while other peoples live they daytime/nighttime life without problem. But if you go to east the same speed, you will have 12 hours days, so you live two days during one day. If I understand correctly.
Honestly you guys are the best! Thank you both so much for your highly entertaining explainers and the humour you both inject into them makes learning so much more fun 😂😂😂. You are the perfect combo! Thank you, thank you, thank you!
Which time zone are you in?
It’s 12 right now
Eastern time zone, the correct one 😂
EDT/GMT -4
Alaska 🥳
GMT baby!…I’m on my way home on a train and my sides hurt cos I’m grunting trying to hold the laugh in so people don’t think I’m crazy…very informative and entertaining episode😂
The passenger steamer SS Warrimoo was quietly knifing its way through the waters of the mid-Pacific on its way from Vancouver to Australia. The navigator had just finished working out a star fix and brought Captain John DS. Phillips, the result. The Warrimoo’s position was LAT 0º 31’ N and LONG 179 30’ W. The date was 31 December 1899.
“Know what this means?” First Mate Payton broke in, “We’re only a few miles from the intersection of the Equator and the International Date Line”. Captain Phillips was prankish enough to take full advantage of the opportunity for achieving the navigational freak of a lifetime.
He called his navigators to the bridge to check & double check the ship’s position. He changed course slightly so as to bear directly on his mark. Then he adjusted the engine speed.
The calm weather & clear night worked in his favor. At mid-night the SS Warrimoo lay on the Equator at exactly the point where it crossed the International Date Line. The consequences of this bizarre position were many:
The bow of the ship was in the Southern Hemisphere & in the middle of summer.
The stern was in the Northern Hemisphere & in the middle of winter.
The date in the aft part of the ship was December 31, 1899.
The date in the forward part of the ship was January 1, 1900.
The ship was therefore concurrently in:
two different days,
two different months,
two different years,
two different seasons
and in two different centuries.
Euller, John (Sept.1953). "A freak of navigation". Ships and the Sea. 3. p. 18
That is simultaneously brilliant & astonishing. Thanks for sharing.
Did anyone do this for Y2K's eve?
That's a pretty sweet story. Kind of like being on the four corners in the US.
However, I wouldn't say it was in two different centuries since the new century starts in '01 since there wasn't a year zero.
Haven't heard this story for years! Thanks for sharing 😁🤟
Same century. There was no year zero so the first century (i.e. 100 years) is from 1 to 100. The last year of all A.D. centuries is of the form digit+0+0. For example: 1900.
You guys have shown me how much I truly love science. You have taught me so much in the recent years. I have decided to quit my factory job and go back to college to pursue a science degree. Thanks for all you do, and inspiring me to pursue something I love!
If only teachers were all like this, then we'd have a lot more promising minds working on our future
Thanks for writing this 🙏
We're heartened by this comment, Gabe! Best of luck to you in your pursuits!
If you want to understand the IDL, don’t watch this.
The thumbnail is wrong.
And at about 5:00 minutes, they get the Tuesday/Wednesday thing the wrong way round.
Chuck is freaking hilarious. Adds just the right amount of levity to what is already a really interesting piece of science. Thanks both!
He was cracking Neil up more than usual. So funny.
I'm always disappointed immediately if I start a video and the co-host is anyone but Chuck
@@Real-Eric-CartmanSame. Neil and Chuck together is unbeatable.
Science show not a comedy show
He trying to keep up with Neil being smart so he has to be funny which he is NOT
This is the most entertaining science channel ever. Neil and Chuck are quite funny, and you learn something in the process. Who could ask for more?!
I think Neil has it backwards. If you travel west chasing the sun, you'll experience one less day as you will have revolved around the earth's axis one less time than everyone else. That's why you have to add 24 hours when you travel west across the international date line.
I think you are correct. Additionally, I think Magellan went West and Antonio Pigafetta would have thought it was Tuesday when he got back and everyone would have told him it was Wednesday.
It is actually Yesterday to the East of the line, not Tomorrow
The most straightforward analog is the US and Japan and how Japan is 15 hours ahead of America because of the International Date Line.
Please note the thumbnail for this explanation is incorrect: If the region of Asia marked to "Today" is marked correctly, then the region of North America marked "Tomorrow" should be marked either "Yesterday" or "Earlier Today." Under no circumstance can that region be "Tomorrow."
There is a logical error Neil made: Magellan’s scolar would have believed he was in the past compared to the people who stayed home. So he would’ve thought it was Tuesday while the people said it was already Wednesday.
Exactly!
I was confused too. I remember reading a work out of fiction where a guy made a wager with people back at home that he could go round the world in 80 days. He kept readjusting his timepiece but his servant didn't. Getting back home he thought he had lost the wager by a day only for his servant to tell him they were right in time.
Guy walked to the pub just before the clock chimed the exact hour.
I remember that Zack & Cody Timezones episode.
As a kid, i thought the international line was just a made up movie thing 😂
Just a few things for those that can be curious:
- Fernando Magallanes was portuguese, but he did the trip to the orders of the Castillian king. It's almost sure that he was ordered as a castillian citizen before starting the journey.
- The jurney started with 5 ships
- They went from Spain (Seville IIRC) down the Guadalquivir river to Sanlucar de Barrameda and then heading west to America, were they discovered the Strait of Magellan. They knew there were another sea (the South Sea in that era). The first eurepean to see that "sea" was Vasco Nuñez de Balboa.
- One of the ships shinked before the strait discovery.
- Another ship returned to Spain also before the discovery, because many sailors thhought that that strait existed.
- They called the "South sea" Pacifico, because when they went into it the water was very calm. They didn't know anything about that sea, and they sailed for several months without seing land. Many died or fell ill with scurvy.
- After sailing beyond Phillipines, one ship had to be abandoned due ti its bad conditions andl almost shink for being loaded too much with species.
- One more ship was captured by the portuguese army. The crew spent many years in prison doing forced labor and most died in prison.
- Magellan died in a Phillipine island. He was replaced by another portuguese captain but for several reasons I can't explain here, he was replaced and finally it was Juan Sebastián Elcano who took the ship back to Spain.
It's a very interesting story that is worth reading,.
Great video, Neil and Chuck. Interesting and entertaining. Only this at 02:16: it's 'Magellan' no 'd'.
3:43 That island, Mr. Tyson, is Mactan, Cebu which we now know is part of present day Philippines. The "native" that killed Magellan is named, Lapulapu. This fierce native is now honored for being our first National Hero.
It seems Magellan not only crossed the international date line, he crossed the line with Lapulapu as well.
going north to south or vice versa in the same time zone can result in having to set your watch ahead or back 1 hr depending on the state/province you are entering when Daylight savings is in effect. I imagine that can happen in the states, when the time zone lines run horizontal along a state line for a while. Fortunately particularly in Western Canada most of the provincial boundaries are north south.
'Come on man, stop messin' with me', almost choked on my breakfast cereal 😂
The thumbnail is wrong, today starts at the International Date Line , yesterday finishers there, Australia is tomorrow the US is yesterday
Graphics, for me the first time i see graphics, photos, visual aids: thank you. 🤯👍👏🎉😎
As a child, I didn't understand how the international dateline worked, so I was convinced that you could speed up time by moving with the rotation of the earth and slow down time by moving against the rotation of the earth.
I also was also confused why you couldn't travel back in time by moving against the rotation of the earth at a speed faster than the earth was rotating.
I worked at a TV station in Boise, Mountain Time zone. East, Central time zone played shows live. West (Pacific Time) had their own feed. Mountain Time Zone, we had to tape delay shows by 1 hour so prime time didn't start at 6pm.
And I always thought the International Date Line is when I date online in another country. 😅
Haha. You’re goofy….in a good way.
With what happened recently you should do an explainer video on Ocean pressure why the pressure is greater the deeper you go
This episode educated me and cured my depression at the same time....love this team
Spent a season crab fishing out of Dutch Harbor, Alaska. It's about an hour away from the International Date Line at the end of the Aleutian islands. Or as they say there, "It's not the end of the world but you can see it from here." Good times. ;-P
The image for this video has "today" and "tomorrow" backwards on each side of the IDL Western Pacific/Kamchatka/China start tomorrow first ... and CONUS (today) lags behind UTC/GMT/Zulu time.
Love the interplay between these two
👍🏿👍🏿👍🏿👍🏿👍🏿👍🏿👍🏿👍🏿👍🏿👍🏿👍🏿👍🏿👍🏿👍🏿👍🏿👍🏿 I have been obsessed for years with this topic because it evidences the existence of going forward in time --- and of going back in time. End of debate, right? And since all of Earth orbits nonstop, by remaining stationery you travel in both space and time like riding a merry-go-round.
Love the information guys! Less giggle and more “ Talk” would be great tho
Chuck is hilarious…but Neil laughing at Chuck’s jokes is funnier than the actual jokes
My thoughts exactly. Love the way Chuck makes Neil constantly giggle 😂
Nah! His giggles are forced.
I've been thinking about sundials, and what the error bars are for each aspect of them. So, can you point them to true North? Can you get the precise angle of the gnomon? If the dial is flat on the ground, then how do you warp the numbers around? And what about my position in my timezone (plus daylight savings)? Then there is the analemma and how much does that change the time? (although I can't really eyeball anything to more than 2 and a half digits.)
I suspect that pointing true North is the most important adjustment.
Yea for the fast forward button. Love the information part.
Umberto Eco wrote a novel about the international date line. La Isla del dia de antes, roughly translated to The Island of the Day Before
That’s not a rough translation; it is a literal and accurate one
Being Spanish, and as much as I appreciate NDT’s knowledge and communication ability, I sort of resent that he does not get his facts straight before explaining things and thus illustrates his videos with wrong graphics. Magellan was Portuguese, but he left from Spain, the entire trip financed by Spanish money. Elcano, who took over the expedition commandment after Magellan’s death, also return to Spain three years later, after completing the circumnavigation that was Magellan’s dream.
The configuration of time zones in the U.S. was *heavily* influenced by the railroad industry in the 19th century, in order to better manage departures and arrivals. It is likely at least part of the reason why the Mountain Time zone is the shape it is.
What a heck, Chuck??!! The other Chuck (Barkley) lives in Mountain Time Arizona! Mountain Time every day, baby!!!💪
I love this series but the video really confused me about the IDL (and time zone math) which I sort of thought I understood before. NdT notes the voyage was all westward returning from the east (as I also learned in school), but the animated map at 4:50 seems to imply an eastward voyage instead. (It's not entirely clear, as the map blurs. But I'd argue it's a confusing graphic snippet.) More importantly, NdT notes at 5:00 or so that Magellan's surviving crew thinks it's Wednesday when they arrive, but the locals assure him it's really Tuesday. As I read the history before, however, the "mistake" went in the other direction. Magellan's surviving crew indeed thought it was Wednesday, but in fact it was Thursday per the locals. So, the crew had mistakenly lost a day, not mistakenly gained one, by their westward circumnavigation. (I understood that when one crosses the IDL going west one adds a day, avoiding the "loss" of westward travel. Going east over the IDL, one subtracts a day. Or have I got that one wrong too?) This is the quote I found of Pigafetta's log: "“On Wednesday, the ninth of July [1522], we arrived at one these islands named Santiago, where we immediately sent the boat ashore to obtain provisions. [...] And we charged our men in the boat that, when they were ashore, they should ask what day it was. They were answered that to the Portuguese it was Thursday, at which they were much amazed, for to us it was Wednesday, and we knew not how we had fallen into error. For every day I, being always in health, had written down each day without any intermission. But, as we were told since, there had been no mistake, for we had always made our voyage westward and had returned to the same place of departure as the sun, wherefore the long voyage had brought the gain of twenty-four hours, as is clearly seen.” Other quotes from logs of similar voyages at: webspace.science.uu.nl/~gent0113/idl/idl_discovery.htm. NdT is much, much smarter than me, so I likely am the one missing something here. Help!
The thumbnail illustration and the graphic at the start of the video seems to be wrong. Left of the dateline is today. Right of the dateline is YESTERDAY not TOMORROW
They should have run the line through New York City. Imagine that it's Friday in Brooklyn but Saturday in the Bronx! Awesome... :)
As someone who lives in the Mountain Time Zone, I am well aware that no one ever accomodates for MST
Around 2007 or 2008, before the economy crash. I was planning a vacation to Australia.
On my return flight, I was going to land at the same time and day that i had left.
ALL thanks to the international date line.
I just don't have the brain power to figure out time zones. I'm too busy declassifying documents with my mind.
Mountain time- Alberta, Northwest Territories in Canada too.
Antonio is Historical proof that the Cameraman ALWAYS survives!
13:53 Neil moved his hands so fast in a twisting motion 😮😮
If you go westward when crossing the International Dateline you will go to sleep on say Tuesday night and wake up on Thursday morning when traveling east you go to sleep on say a Saturday night and wake up Saturday morning. Also, when stationed in Guam in the U S Navy to call commands in Hawaii you had to adjust both time and date, if it was noon in Guam it was if I remember correctly 4 PM in Hawaii the day before so no calling on Mondays!
The International Date Line serves as the imaginary boundary where one calendar day shifts to the next, allowing for consistent timekeeping around the globe. It plays a crucial role in coordinating time zones and international travel. How might changes in global communication and travel impact the relevance or management of the International Date Line in the future?
Ferdinand Magellan did not first circumnavigate the globe as he died in the Philippines before his group arrived in Spain.
Time zones should be on longitude lines 15 degrees apart. The boundaries are only to accommodate civilian needs. In the United States, the only large cities that line up and agree with Solar time are Memphis and Denver. Memphis is at 90 Degrees and Denver is at 105 degrees.
Good questions, Chuck!
Magalhães was Portuguese but depart from Spain. I am Portuguese and very proud off Magalhães Great Men 🇵🇹 after that we divide the world in half between Portugal and Spain from Brazil to Philippines to Spain from Philippines to Brazil to Portugal. Portugal Portugal once have the biggest Empire of the world
I do reconstructing time zones in shorthand. I know the Eastern States of Australia are "later" than the West and that solves that. My tme zone is GMT+8, Perth, Wester Australia
Thanks Much !.......yes
Simple thought experiment. You leave Portugal on Tuesday, at precise noon,headed west traveling at such a rate of speed that you return 24 hours later. The sun will be overhead the entire time. The scholar would mark 0 days passing so he would say that it is still Tuesday. People in Portugal would say it is Wednesday (correctly). So Neil does have it backwards in this video.
space and time are connected. as space gets smaller time moves faster. keeping everything moving at 9.87m/s.
watch the lines shrink in direct relationship to the distance apart.
But the picture I clicked on to run the video is wrong. They have today and tomorrow backwards.
I remember years ago tv shows combined central and mountain time. Such and such time eastern then such and such central and mountain
Chuck was right in his first answer, Phileas Fogg won his bet to make it back to the club by midday because they realized having crossed the Date Line it was the 80th day and not the 81st day after all. Exactly the same experience as Mr Pigafetta.
Yo dude is hilarious!!! He said “it’s just us here, come on man, it’s Wednesday right?” 😂😂😂
And to think, that if you started celebrating your birthday at midnight in the first dateline timezone, and moved westwards in an aeroplane in order to stay in a zone so you could continue to celebrate your birthday until the very last second of that day, you could continue to celebrate your birthday for 50 whole hours straight!!
😮👌😁👌
The length of a 'Calendar Day' on Earth is Relative! 😮 Relative to if you are moving or not, in which direction you are moving, and what your starting and finishing location is, and can therefore last as long as 50 hours! 👌😁👌
Thumbnail is wrong I guess? As it’s always later in Asia than in North America, or the dawn arrives in Asia before it does in NAm. So ‘today’ and ‘tomorrow’ should be switched, right?
Yes!
Finally something I don't think Neil knows. What See you nest Tuesday really means.🤣🤣🤣
UTC +10 here on the Australian east coast.
Just as a nitpick, the thumbnail bothers me because it shows the today and tomorrow in reverse of what it should. As Neil mentions near the beginning of the video that sunrise happens in the east first and then progressively move further westward from there. This means that people just west of the international date line will experience midnight, ie. a new day, first and then people further west will gradually join them in that new day.
This video shows really well when different places on earth transition to a new day: th-cam.com/video/vta6uXkieh8/w-d-xo.html
Shout out 2 "Suite Life On Deck"🙌🏿😌
No… Magellan travelled west so when he got home on a Wednesday according to the onboard log it must have been Thursday in Portugal not Tuesday 😊
Hate mail to Chuck! I live in the Mountain Time Zone! 🙂 Fun Explainer as always gentleman!
CST. Missouri
So the Magellan crew actually shortened the length of their days by traveling in the opposite direction of the rotation of the Earth relative to it's orbital path around the sun which defines a day. Do I have that right?
I suspect your "TODAY" and "TOMORROW" labels are backwards on the teaser pic.
@1:18
Exactly how I do it 🤣
I loved this video. Thanks guys. Such a great story!
I live in Montana, Mountain Standard Time, during the Summer time Mountain Daylight Time. I lived in Arizona for 32 years. Mountain Standard Time all year round. Daylight time doesn't exist in Arizona because who wants spend another hour at 115 degrees.
You'll see me next Tuesday. Is that my next Tuesday, or your next Tuesday.
Oh my! You guys were in rare form today! LMAO...👍👍👍
I'm a Forester guy too Chuck
In Jewish Law, there is an argument as to exactly where the International Date Line is located. There are 3 basic approaches. This has major ramifications for those who are Sabbath observant. I have done the research, and it is fascinating
See you next Tuesday? You posted this on Wednesday!
If the continents shift (Tectonic plates moving) will they change time zones for those affected?
Am I the only one who giggled when Neil said "at the end of the day..."? They didn't even bat an eye, while I thought Neil was bringing the cheese...lol
Wether through science, or by faith, everything is connected somehow. Therefore; the separation of time is illusory.
Sometimes when someone asks me when something can happen I say the second Tuesday next week. Little do they know……
😁 Everyday is the same it's just a day, dates and dateline are used for making people, things, events meet. Animals don't need compass or clock yet they can be very accurate in meeting your time. Animals doesn't care what age are they, when they're old they know they're old 😁.
Funny I’m in Colorado!!!!
Isn't the thumbnail incorrectly labeled? Shouldn't the right side (Americas) be "Today" and Asia be "Tomorrow," right? Like, the land of the rising sun and the far east start the international dateline.
Hey... We here in Arizona don't have to change our clocks. Boom
EEVblog frequently punks us with his April Fools Day videos because we tend to forget he's a day ahead of the rest of us.
Isn’t the thumbnail backwards
I almost spit when I heard Neil say "C U Next Tuesday".
I live in a state with two different time zones.
Why is time important? I don't love getting old but essentially I love Keanu. 😆
Juan Sebastián Elcano was the "first". Magellan died in the Philippines.
Neil is one of the real messenger of the universe.
he's atheist, so it makes you wonder WHICH universe
I disagree Anton is
@@savagepro9060 : The real Universe.
We all float down here
@@savagepro9060 🤡
I'm from the Philippines and I'd like to add that Ferdinand Magellan died in the Philippine islands when he was trying to convert the native Filipinos to Christianity and got involved in the rivalry between two tribal kings. Magellan tried to convert one of those tribal chiefs by force. He had around 60 troops while the resisting natives numbered 1,500 in the Battle of Mactan.
Those damn missionaries
Yes, and not just been killed without any reasons.
Christianity, or Catholicism? Big difference.
@@CollinZaffke Catholics invented Christianity
catholics are by definition christian
Sorry guys but this time you made a misstake. They thought it was Wednesday but it was Thursday. They "lost a day"! 😉
I also missed a bit more explanation this time, beacuse I think many would ask, how is it, that Magellan's ship lost a whole day, was the time passing faster for them?
Here is my explanation for those, who don't understand how it works. If you travel towards west, your days are going to be longer, beacuse you travel in the same direction as the sun goes (opposit way of the earth rotation). You are going to see the sun longer every day, because you travel "togeher" with the sun, so as a result your days are going to be longer than 24 hours. The sunset is also happening somewhat later for you, and the the sunrise too.
Here is an example. Lets assume we have a time period of 10 days that means 240 hours to travel around the world towards west. But as I said for those who are travellig, the days are going to be longer, for exampe instead of 24 hours 26.67 hours in average. Now if you divide that original 240 hours (10 normal days) with 26.67 you get 9 nine days instead of 10. That is how for Magellan's crew seemingly passed 1 day less, because their days were longer than 24 hours, still the time was passing the same way for everybody.
power of peer review
Sometimes even a professor can be wrong.
Good catch!
@@TropicalVibesHD I was thinking about the missing detailed explanation, and I thought I was really dumb, because it didn't fit to the story explained in the video. I double-checked the facts and it turned out that I was right.
However, it's only those who do nothing that make no mistakes. Much more important is the story and the scientific thoughts behind it.
I was thinking the same thing. If the man on the boat logged each day at around noon, the sun would pass overhead 1 less time for him than someone who stayed in Portugal. The traveler would have slightly longer days and therefore, fewer of them. Easy mistake to make, even for the best and brightest.
When I was a young kid my father told me a story about the international dateline. Dad served in the 13th Army Air Corp in the South Pacific. In one of his many bombing missions (he was a tail gunner in a B-24 Liberator), the squadron took off late on a Tuesday night, bombed their target on Thursday, and returned to base on Wednesday.
Thank you for your time and effort you are much appreciated 💛
Thank YOU for watching :)
I appreciate Chuck so much in these episodes. In addition to his quick wit I love his intellectual curiosity, which brings out the joy in Dr. Tyson, who is an incredible science educator. Chuck sets a great example for laypeople like me who are interested in science and willing to learn many new things.
He's an unfunny clown who slows this entire episode down.
Once again an interesting topic explained in an entertaining and informative way. Thanks very much.
Thank you for the kind words!
Well there are at least few mistakes:
1. Fernando Magellan spelled without D at the end
2. He didn't make it: dead somewhere near Indonesia.
3. They traveled westwards, not as it shown in the video
4. They actually should have gained a day and thought it was Monday instead of Tuesday, not Wednesday
My thoughts exactly. Too bad they made those mistakes. They specified that Magellan himself didn’t finish the trip.
I only caught number 4. Literally paused the video when he said they lost a day and came to the comments to see who else caught this
Magellan's first name was Ferdinand.
Not sure where you got that from.
@@blue9multimediagroupMaybe from Magellan’s name? 😅 His name was Fernão de Magalhães in Portuguese, translated to Fernando de Magallanes in Spanish. Fernand de Magellan in French. I guess English speakers use Ferdinand because « Fernand » isn’t a name they’re used to, but it’s certainly closer to his original name. 😊
This drove me crazy in the last couple of minutes. If you go west fast enough (as fast as the Earth rotate in your current location), you will have eternal noon, while other peoples live they daytime/nighttime life without problem. But if you go to east the same speed, you will have 12 hours days, so you live two days during one day.
If I understand correctly.
Honestly you guys are the best! Thank you both so much for your highly entertaining explainers and the humour you both inject into them makes learning so much more fun 😂😂😂. You are the perfect combo! Thank you, thank you, thank you!
These two are hilarious. I know that every time I click on a new video, it's going to be a good day.
Love you guys I learn so much from you two!!!
this was a great episode plus more than likely factual humor..
I'm proud to be a Mountain Timer. I'm looking at the map now, and I'm at just about the narrowest part of that time zone.