Showing posts with label International Date Line. Show all posts
Showing posts with label International Date Line. Show all posts

December 4 - Kamolol – or Thanksgiving Day – on the Marshall Islands

  Posted on December 4, 2021


This is an update of my post published on December 4, 2010:





The Marshall Islands is a nation made up of 29 atolls and 5 islands in the Pacific Ocean, near the Federated States of Micronesia.

This country played an important part in World War II, because Japan used Kwajalein Atoll as an administrative center, and the U.S. invaded and occupied the islands in 1944, destroying the Japanese garrisons. The U.S. continued to have control over the islands until 1979, when the nation became self-governing, and 1986, when the nation became fully independent. Because of the American influence, although the main language of the Marshall Islands is Marshallese, English is also commonly spoken and shares official status.

The Marshall Islands are near two very important but imaginary lines on Earth: they lie just north of the Equator and just west of the International Date Line.



The Equator circles the globe at equal distances from the North and South Poles and is the starting point, the zero, in counting latitude.


The International Date Line lies (mostly) on the 180-degree line of longitude, which starts at the North Pole and ends at the South Pole. By international agreement, when travelers cross the line, they change dates. Traveling eastward, they subtract a day, and traveling westward, they add a day. This is necessary because, as travelers cross time zones in a plane, say, their sense of the day would not match the day on the ground.


Imagine two travelers flying from England to the Marshall Islands. One flies eastward and must set his clock ahead one hour for each 15 degrees of longitude (to match local time zones). The other flies westwards and sets his clock back one hour for each 15 degrees. When the two travelers meet up in the Marshall Islands, their clocks would differ by 24 hours. They would both say 9:00 a.m., say—but on a different calendar day!

To fix this problem, we change dates when crossing the 180-degree longitude line.

Learn about Latitude...
...the Equator...
...Longitude...
...and the International Date Line.

Check out the beauties of the Marshall Islands, including the culture:






 

Also on this date:











March 9 – A Total Solar Eclipse that Ends the Day Before It Begins?

Posted on March 9, 2016

Total solar eclipses are rare. I've never seen one, and I'm pretty darned old!!!

But can a total solar eclipse reverse causality and promote time travel? How can an eclipse end the day before it begins?

I bet you know without having to read the explanation...right?

If you aren't sure, scroll through some of these cool eclipse photos and diagrams to learn (or brush up on) what causes a total solar eclipse...






Okay, here's how a total solar eclipse started on March 9 and ended on March 8:

At the beginning of the eclipse, the moon's shadow fell over a small portion of the Pacific Ocean on Wednesday morning, March 9, local time. The Earth's rotation caused the shadow to cross the international date line – and then the eclipse was visible on Tuesday afternoon, March 8, local time!

To learn more about the eclipse, check out this New York Times article.




Also on this date:









Discover What Your Name Means Day

































Plan ahead:
And here are my Pinterest boards for:


December 4, 2010



Kamolol – Thanksgiving Day – Marshall Islands


This island nation is made up of 29 atolls and 5 islands in the Pacific Ocean, near the Federated States of Micronesia. This country played an important part in World War II as Japan used Kwajalein Atoll as an administrative center, and the U.S. invaded and occupied the islands in 1944, destroying the Japanese garrisons. The U.S. continued to have control over the islands until 1979, when the nation became self-governing, and 1986, when the nation became fully independent. Because of the American influence, although the main language of the Marshall Islands is Marshallese, English is also commonly spoken and shares official status.

The Marshall Islands are near two very important but imaginary lines on Earth: they lie just north of the Equator and just west of the International Date Line.

The Equator, pictured here in red, circles the globe at equal distances from the North and South Poles and is the starting point, the zero, in counting latitude.

The International Date Line lies (mostly) on the 180-degree line of longitude, which starts at the North Pole and ends at the South Pole. By international agreement, when travelers cross the line, they change dates. Traveling eastward, they subtract a day, and traveling westward, they add a day. This is necessary because, as travelers cross time zones in a plane, say, their sense of the day would not match the day on the ground.

Imagine two travelers flying from England to the Marshall Islands. One flies eastward and must set his clock ahead one hour for each 15 degrees of longitude (to match local time zones). The other flies westwards and sets his clock back one hour for each 15 degrees. When the two travelers meet up in the Marshall Islands, their clocks would differ by 24 hours. They would both say 9:00 a.m., say—but on a different calendar day!

To fix this problem, we change dates when crossing the 180-degree longitude line.

Learn about Latitude...
...the Equator...
...Longitude...
...and the International Date Line.

For more on latitude and longitude, see this earlier post (scroll down).