17-Jun-2002 -- In 364-2, Kamihie-town, Nishiwaki-city, Hyogo-prefecture, there is the east longitude of 135 degrees and north latitude of 35 degrees intersection.
It is a point called "a navel of Japan." [The 135 east longitudes have been the standard of the Japanese time. There is the northernmost Japan tip in North latitude 46 degrees, and the southernmost tip in North latitude 24 degrees.]
This monument is a crossing of geography and is 500 meters northwest from the point correctly measured by the GPS.
It is because the earth is flatter although it was thought that the earth was more spherical.
Therefore, the true intersection at the time of measuring by GPS is on the hill. About five years ago, a new monument was built. It is among four poles built on a hill.