Pages on this website include information about Rokuyō and there is, of course, no copyright on the Rokuyō calendar, its calculation, interpretation, etc.
However, the images and material contained on this site, as well as its design, are copyrighted, and the owner of the site reserves all rights to this content.
That said, practically all content is not just from our imagination; it's been collated from innumerable sources, and those sources have likewise been collated from innumerable other sources.
See, for example, the image on the home page with the word "ROKUYO" and its Japanese kanji characters. We didn't invent the kanji, the alphabet letters, and the word. But the image of that word and the other images are our own design and therefore copyrighted. Similarly, the original text and concepts authored on this site are protected as our intellectual property.
So given de minimis non curat lex, if you want to copy something you will usually find we're quite accommodating if you ask politely. Just email us at enquiry@rokuyo.org.
We are only likely to refuse, and take legal action against offenders, for reproduction of material for use opposed to the principles of this site, such as satanism and other interests commonly considered nasty.