User blog comment:Benatius/Japan's name change/@comment-1045231-20180609160627

Because "Dawnland" is meaningless to English speakers - the concept of "dawn" representing Japan is very un-Germanic in origin, too, since they probably didn't even know of Japan, and if they did, "dawn" wouldn't have described it. In addition, oversetting proper names in general is a bad idea. Even Icelandic doesn't do this for all but a few names (like Montenegro, which isn't the native name for Montenegro anyway, but is instead a Romance calque). Japan has a much bigger history in English behind it, while making up a weird calque of the Japanese view of their nation would have none.