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What happens when you pass the International Date Line?

What happens when you pass the International Date Line?

When you cross the International Date Line from west to east, you subtract a day, and if you cross the line from east to west, you add a day. Depending on which time zone the country follows, the time difference on either side of the line is not always 24 hours.

What would have happened if the International Date Line passes through Greenwich?

But if it were on the International Date Line, the roles would swap and what is now the IDL would be the Prime Meridian Line. Crossing the line at Greenwich eastwards would mean setting your watch back a whole day and crossing it westwards would mean setting your watch forwards a whole day.

Which country passes through International Date Line?

The IDL now passes between Samoa and American Samoa, which remains on the east (American) side of the line. Tokelau is a territory of New Zealand north of Samoa whose principal transportation and communications links with the rest of the world pass through Samoa.

What does the International Date Line do?

The date line, which roughly follows the 180-degree meridian, is about halfway around the globe from the prime meridian, which measures 0-degrees longitude. The date line helps divide the world into 24 time zones. Crossing the date line either adds 24 hours or subtracts 24 hours from a traveler’s day.

Where does the day starts first in the world?

Each day on Earth begins at midnight in Greenwich, England, where the prime meridian is located. Originally, the prime meridian’s purpose was to help ships at sea find their longitude and determine accurately their position on the globe.

Why is the International Date Line in Greenwich?

The decision was based on the argument that by naming Greenwich as Longitude 0º, it would be advantageous to the largest number of people. Therefore the Prime Meridian at Greenwich became the centre of world time.

Is 180 degrees west the same as 180 degrees East?

Basically, 180 east and west are the same. In other words, [45,180] is the exact same location as [45,180].

Where on earth does the day start?

Greenwich, England
Each day on Earth begins at midnight in Greenwich, England, where the prime meridian is located.

What country is 24 hours ahead of us?

American Samoa
Though, sadly for the Americans, it left American Samoa marooned, only 70km away but 24 hours apart (25 in summer). And then there’s the Republic of Kiribati, which became independent in 1979 by combining three colonies – the UK’s Gilbert Islands, and the Phoenix and Line Islands from the US.

What happens if there is no International Date Line?

Without the international date line, people who travel west around the planet would discover that when they returned home, it would seem as though an extra day had passed. This is what happened to Ferdinand Magellan’s crew when they returned home after their circumnavigation of the Earth in 1522.

What happens when you cross the International Date Line from east to West?

Once you cross that international date line from east to west,you need to minus a date and time. Example- if it is 10th MAY,Monday 2020 ,Once you cross the international date line (which is taken as 180 degree) east to west it will be 9th MAY,SUNDAY,2020.

Where is the International Date Line in England?

Thus, the 180-degree line of longitude, exactly one-half way around the planet from Greenwich, England (at 0 degrees longitude), is approximately where the international date line is located. Cross the line from the east to the west, and you gain a day.

Why is the International Date Line a zigzag?

Because the line is simply established by international agreement and there are no treaties or formal regulations associated with the line, most of the rest of the world’s nations followed Kiribati and moved the line on their maps. When you review a changed map, you’ll see a big panhandle zigzag, which keeps Kiribati all within the same day.