27 May marked a momentous Monday for people who ascribe significance to the interval between 22 December and 19 January everywhere, as it was on this day that Capricorn left Capricorn.[1]

“What?”

For those suitably stocked up on the applicable jargon, it was on this date that the point on the ecliptic with right ascension 20h referenced to B1875, and demarcating the western edge of Capricornus, now has an ecliptic longitude greater than 300°. Armed with this knowledge, you can go do something else now.

“Huh?”

Okay, so we need to step back a bit. Then step back another …

In the last few years I’ve moved more and more towards theming my general online presence around horseshoe crabs. There’s a general reason for that, and to properly honour horseshoe crabs for what they are, it deserves to be explained.

First, we have to start at the beginning. Or, the best we lesser specimens can know of the beginning. Back around the late Ordovician, at least 445 million years ago[1], there was a chelicerate currently called Lunataspis, which looked something like this:

Fast forward 445 …

It’s been a long, long time coming – years, really – but at long last I have a site I can maybe take enough pride in to use seriously and keep everything together. At least, theoretically; because strictly as I write this the site for it to appear on does not quite yet exist. I have spent weeks on development and testing though, with uncharacteristic productivity, so it should be all ready to go live more-or-less pending only these words.

For a while I’ve wanted to bring my various shenanigans together in a unified site that would present it appropriately …