neptday

The girls and I were discussing the fact that there are 7 days in a week.

What if there were 8? But, what if that extra day were already here, only being lived by some people?

And what would it be called? You should probably name it after some Greek or Roman or Norse god — but whichever ones don't seem taken probably are taken after all, because they're all sort of mapped onto each other. (You can't have a Zeus- or Jupiter-named day, for instance, because the king of the gods already has Wednesday, Wodin's Day, also called Jueves after Jove.)

One that seems to be left is Poseidon, or Neptune. How about Neptday?

And then, as for who the people are who are living that extra day, it becomes obvious: mermaids!

So, we decided that between the moment just before sundown and the moment of sundown Monday evening, we experience it as a single fleeting moment, but the mermaids have lived an entire secret day.