User blog comment:SolZen321/Why Ultra Galaxy makes the Lore wonky..../@comment-5724614-20171010143815/@comment-5527544-20171010174935

So I've been looking it up on the Japanese Wikipedia and both the story overview and the section for Zap Spacy, have it as "in the near future". So most likely 500,000 is a translation error, or people just can't decide....

Trying to find it on the official Ultraman Website.