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International Date Line
The International Date Line is a line of longitude roughly located at 180 degrees. It marks the two different days on Earth, where 24 hours is added or subtracted when one crosses the line.
692 Questions
What is International Date Line also known as?
The International Date Line is also known as the "line of demarcation." It marks the boundary between two consecutive calendar days. When crossing the line from east to west, a day is subtracted, and when crossing from west to east, a day is added.
No. Your watch isn't reading the time of the place where you are, and the date
didn't change at the place whose time your watch is reading.
However, should you ever become interested in knowing the time and date in the
place where you are, then you'll need to look at your watch and do some translating.
You'll need to know how many hours from UTC the place is where you happen to be,
and you'll also find it very useful to ask someone the date, if you haven't kept track
of it along the way.
What Asian country does the International Date Line pass through?
Kiribati Although, in 1995 Kiribati by law changed the date for its eastern half, effectively moving the date line to the east of this country. Not everyone recognizes this change, however. It's important to keep in mind that while Kiribati made a controversial move (making Caroline Island the first place on earth to enter the 21st century) there is in fact no international law that binds any nation to observe the conventional or any particular definition of the date line. Russia and the US define the date line in such a way that there is not a part of the nation permanently isolated a day ahead (or behind) the rest of the nation. But the original date line as defined is 180 degrees longitude. It happens to be a fortunate coincidence that the meridian opposite 0 degrees passes mostly over vast stretches of ocean.
Why doesnt the international date line go through any countries?
Can you just imagine what a holy mess you would have in a country that's
maybe 100 miles wide and has two different calendar dates in it.
-- You phone up your dentist for an appointment, and he gives you one on a
certain date. The dentist's office could be in the section where the date is the
same as yours, or one day different.
-- Flu shots cost $35, but the Health Department is giving them free to everyone
who shows up there on a certain date. The clinic could be on the same date as
you are, or one day different.
-- Your electric bill is overdue and costs 10% more if you pay it after the 15th of
the month. Their office could be in the section where the date is the same as
yours, or one day different.
-- Your shop has an order for 1,300 pieces, but you have to make delivery by
the 21st of the month or else the order is canceled. Your manager thinks you
can just barely make it if everybody works some overtime. One day can make
the difference. What day exactly does the production have to be finished ?
Where did the order come from ? Was it from the customer's local plant, or from
their office in Singapore ? Their local plant is a day ahead of yours, their Singapore
office is the same date as your plant, but a day ahead of your business office,
and right now we can't remember whether your business office in the next
town is on the same date as your plant, and we're starting to get a headache.
-- Payday on your job is on the 15th of the month. The payroll office could be in the
same section where you work, or their date could be one day different from yours.
And if it's one day different, it could be one day ahead or a day behind. And your
job could be in the same date as your home, or a day off.
-- Hamburger is on special at the supermarket until the 15th of the month. You
can't buy it now, but you get paid on the 15th. The 15th at the supermarket might
be the same as the 15th that you get paid on, or one day off. Where is the market's
head office ? All the stores in the chain may or may not be on the same date.
And if they are, it may or may not be the same date as your company's payroll
office, or your home.
-- Your daughter is in the 3rd Grade. She brings home a note that the 3rd Grade
is having their pictures taken next month on the 12th, so be sure to wear a
white blouse to school that day. Now you have to find out whose 12th ... it
could be your 12th, the 12th at some other 3rd grade kid's house, the school
building's 12th, or the 12th at the photographer's shop.
The International Date Line used to split one country in the Pacific, but they passed
a law that changed the date in half the country to match the date in the other half,
just to avoid these hassles.
That's like asking: What is the interval in feet between the heights allowed for adults ?
There is no standard set of 'lines' that's allowed, and you have to choose one that's
close to what you need. Latitude and longitude are measurements of position.
Every point on earth has its own latitude and longitude. If I give you the
numbers for one point, and you go to a different point, then your point has
different latitude or longitude, or both. A good surveyor can measure the
latitude and longitude of a point with enough precision to tell it apart from a
different point that's a few millimeters away.
What's the interval in inches between the lines on a ruler ? Usually they're one inch
apart, but does that mean we're not allowed to talk about measurements of things
that don't come out to be whole inches ? Of course not. The only reason there aren't
more lines on a ruler is that it would be harder to read.
Some maps and globes are manufactured with a line printed for every 15 degrees.
Others have a line every 10 degrees. I have a set of maps with a line printed for
every 0.0083 degree, and a set of street maps on my computer that will give me
a line every 0.0013 degree if I want it.
There's no reason the publisher could not print a line every 0.1 degree on the world map,
except that the entire worls map would then be solid black and you wouldn't be able to
see the places under the lines.
The lines are only a convenience, to show you approximate intervals, and then let you
estimate other values between the lines. Just like the lines on a ruler.
Is the International Date line a line of longitude?
No. Greenwich Mean Time is the timezone located along the Prime Meridian, 0º longitude. The International Date Line is on the exact opposite side of the earth at 180º, with some variance. The International Date Line is 12 hours away from Greenwich Mean Time in many areas.
How many McDonalds restorent in the world in this time?
As of 2021, there are over 39,000 McDonald's restaurants worldwide. McDonald's is one of the largest fast-food chains globally, with locations in numerous countries.
Why will the dip not be the same everywhere in the world?
The dip of the Earth's magnetic field varies because the field is not perfectly uniform and is influenced by the local geology of each region. Changes in the magnetic properties of the Earth's crust, as well as the distribution of magnetic minerals, can cause variations in the magnetic field strength and direction, resulting in different dip angles at different locations around the world.
When one crosses the international date line the calendar day?
When you cross the IDL, you turn your calendar one whole day, either forward
or backward depending on what direction you're traveling.
If you're traveling westward, with the US behind you and Japan in front of you, turn
your calendar forward a day when you cross the line, and skip 24 hours.
If you're traveling eastward, with China behind you and Canada in front of you, turn
your calendar back a day when you cross the line, and repeat the previous 24 hours.
The International Date Line marks the boundary between two consecutive calendar days, creating a difference in time of up to 24 hours. This imaginary line generally follows a meridian of longitude in the Pacific Ocean and helps account for the Earth's rotation and time differences across the globe.
Which line of latitude passes through Sahara desert?
The Tropic of Cancer, which is located at approximately 23.5 degrees North latitude, passes through the Sahara Desert in North Africa.
How far is the international date line from Alaska?
Very close. In fact, when the IDL was drawn, it had to be zigged and zagged in order to
just miss Alaskan territory.
-- In the Bering Strait are two small islands called the Big and Little Diomedes. One belongs to
Russia, the other is part of Alaska, the channel between them is less than 3 miles wide, and the
International Date Line threads through that channel.
-- The Aleutian Chain of Islands, which is all included in Alaska, dangles in a giant drooping
curve from Alaska's "chin", almost 1,500 miles south and west, well across the 180° meridian
of longitude that's nominally supposed to mark the IDL, all the way to the end of Attu Island
at about 172° East longitude. The Date Line has been drawn with a big westward 'notch'
in it, in order to avoid splitting the Aleutian chain into two different calendar dates, and
passes just off the west coast of Attu.
So you have two places where the International Date Line is no more than a few miles
from the coast of Alaska.
Is Alaska across the international date line?
The dateline does not cross Alaska. It would have, if it were drawn exactly along
the 180° meridian all the way from one pole to the other. But it was zigged and
zagged in several places, in order to avoid splitting any single political entity into
two different calendar dates. Can you imagine what life in Alaska would be like if
different parts of the state were always on different dates ! ?
What is the last country in the international date line?
The last country in the international date line is Samoa. Samoa is located just west of the line, so it is one of the first places to see the sunrise each day.
What is the prime meridian marked by?
The Prime Meridian isn't really "marked by" anything. It is DEFINED by reference to the Royal Observatory in Greenwich, England. It is the zero point for the measurement of longitude east or west of Greenwich.
What is the international date line line?
The International Date Line was established, beginning in 1917, as the arbitrary line of longitude at which a calendar day is said to begin.
Because the Earth rotates, and any clock hour could be local time somewhere in the world, a location was chosen to be the dividing point between calendar days.
As Greenwich was chosen as the central point of the Earth's lines of longitude, noon at Greenwich (when the Sun is directly overhead) was designated as midday. It follows therefore that on the other side of the planet, 180 degrees from Greenwich, it would be midnight, the ending of one calendar day and the beginning of another.
This line, which is 180 degrees east or 180 degrees west longitude, is therefore the line on which one day ends and a new day begins. The line runs through the Pacific Ocean from the North Pole to the South Pole passing between Russia and Alaska. The actual Date Line diverges from the meridian to accommodate national boundaries : eastward for Russia, westward for the Aleutians, and eastward for Pacific island groups and New Zealand.
At any time other than midnight, it is a different day on either side of the International Date Line. If you cross it heading west, you add a day. If you cross it going east, you subtract a day (in addition to making the hourly time changes, backward or forward, respectively).
How many degrees of longitude separate las Vegas from international date line?
Las Vegas is approximately 116 degrees west of the International Date Line, which lies at 180 degrees longitude. Therefore, there are about 64 degrees of longitude separating Las Vegas from the International Date Line.
Is there a time difference between Atlanta and usvi?
65% of the time, from the 2nd Sunday of March to the 1st Sunday of November, there is no time difference between Georgia USA and the Virgin Islands.
8 AM EDT = 8 AM AST
From the 1st Sunday of November to the 2nd Sunday of March, the Virgin Islands are one hour ahead of Atlanta.
7 AM EST = 8 AM AST
Is new caledonia east or west of the international date line?
Yes. Either one. Whichever you prefer. Since the Earth is a sphere, you can leave the
International Dateline in either direction and wind up in New Caledonia eventually.
But since Noumea's longitude is about 166.5° east, the trip westward from the IDL
gets you there substantially sooner.
What is the up and down longitude line that goes through greenwich England?
The up and down longitude line that passes through Greenwich, England is the Prime Meridian, at 0 degrees longitude. This line marks the starting point for calculating longitude around the globe, with locations to the east measured in positive degrees and locations to the west measured in negative degrees.
What continent is on the prime meridian?
The Prime Meridian crosses the continents of Europe and Africa,
and has one end of it on Antarctica.
What are the 3 continents the prime meridian go through?
Africa,Europe, and antarctica. The prime meridian goes straight like longitude.
Europe is on top, Africa is in the middle, and anarctica is on the bottom. Hope this
answers your question!
And a Good Day to you!
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(Unless your map is printed, or your globe is mounted, with the north pole
at the bottom. In that case, Antarctica is on top, Africa is in the middle, and
Europe is near the bottom.)
Is a meridian the same thing as the prime meridian?
No, a meridian is a line of longitude on a map stretching from the North Pole to the South Pole, while the prime meridian is the specific meridian designated as 0° longitude, from which all other longitudes are measured.
Let's see....divide by pi, carry the 2, it looks like 110 hours is 110 hours.
about 4 and a 1/2 days.
