The Meaning Behind the Name
Japan is famously known as the "Land of the Rising Sun." The nickname is not just poetic imagery — it is a direct translation of the country's own name for itself. In Japanese, Japan is called Nihon or Nippon, written with characters that literally mean "origin of the sun" or "where the sun begins." So when the world calls Japan the Land of the Rising Sun, it is simply repeating what the Japanese have called their own country for well over a thousand years.
A Name Born from Geography
The name came from a question of perspective — specifically, the perspective of China. To observers in ancient China, the islands of Japan lay far to the east, out across the sea in the direction of the sunrise. From the Chinese point of view, Japan was quite literally the land where the sun came up. The Japanese themselves adopted this idea, embracing a name that placed their country at the very source of the morning light.
A Letter to the Chinese Emperor
The phrase has a remarkably old and specific origin. In the early seventh century, a Japanese prince named Shōtoku sent a diplomatic letter to the emperor of China. The letter opened with a now-famous line, referring to the ruler of the land "where the sun rises" addressing the ruler of the land "where the sun sets." This bold wording is one of the earliest known uses of the idea, and from around that era the name Nihon — origin of the sun — took hold and has been used ever since.
Source
This article was written using information from Wikipedia.