The demarcation time line is a conditional line that defines the change of date when it intersects. Although it is determined only by agreement between people, nevertheless, this line has an important property. If you sail on a ship and cross it from east to west, and do it exactly at midnight, then an unusual thing will happen: you jump in a day and instead of going to tomorrow, you will immediately go to the day after tomorrow.
If you swim from west to east, then a completely different, but also
unusual thing will happen
. If you cross this line at exactly midnight, then instead of getting to the next day, like anywhere else in the world, you will be at the beginning of the same day that has just ended. This conditional line, possessing such unusual features, runs along the meridian with a length of one hundred and eighty degrees.
The term "line of demarcation" is usually used in a geographical sense. However, this expression has other meanings. Korea, for example, uses the notion of a “demarcation line” to mean the state border. Once, having entered into armed
conflict, North and South Korea could not come to peace. With the participation of the world community, a demarcation line was drawn across the country, dividing Korea in two. And now the two countries coexist, each of them got the opportunity to live their own lives, and not be in a continuous and long-term state of exhausting war. This line of demarcation was drawn along the thirty-eighth parallel. With its establishment in 1953, peace negotiations began between these countries, they continue to this day. This demarcation line is considered the last material monument (after the destruction of the
Berlin Wall) of the Cold War. Interestingly, more than ten well-equipped tunnels were discovered under it, through which
North Korea was able to transport troops to the territory of South Korea for military operations. The width of the border zone is four kilometers. An additional fortification was built on the territory of this state, which was very powerful and expensive, which could stop a massive tank attack.
Another famous demarcation line is located on the island of Cyprus. She has her own name. It sounds like the Atilla Line. The island was divided between its northern and southern parts. The first of them is the Greek part of the island, the second is Turkish. Moreover, it is interesting that part of the demarcation line runs through the old city of Nicosia, while dividing the capital into two parts. A powerful wall has been installed along the line of demarcation in the city. The decision to build it was made back in 1964, when serious unrest and clashes broke out between the Turkish and Greek populations. This site then began to be called the "green line". In 2008, work began on the removal of the wall. The length of the line is about one hundred and eighty kilometers, and the width ranges from several meters to seven and a half kilometers.