We have explanations plenty...all from the present time, none from earlier...for the hundredth time:

Why no one noticed this in the past several-thousand years???????????????????????????????????????????????????

Do the Hawaiians not count?
[link to en.wikipedia.org]



I lived in Hawaii for many years and never heard about this. What you refer to is Wikipedia, not the Hawaiians.

Sure you did. Because just living in a place would automatically expose you to all the obscure mythology. And of course you ignore the other reference on that page to a Cheshire moon which describes the same thing. Lewis Carroll's story not old enough for you? When Wikipedia has good info it can still be a valid source. I can't help that you choose to remain ignorant.