Hi,
A very interesting concept. It uses an SVG and just a little bit of JS to rotate it. ... I think it would be a nice experiment with "variable fonts with SVG"
The tweets are also interesting, they described, how it was created. ... I think one couldn't make it much more complicated to get the SVG.
I personally would invert the order, remove the "seconds" ring and change the update speed. ... ON my screen, in fullscreen mode, the seconds are a bit jumpy. .. So IMO the SVG should be simplified too, to increase performance.
Updating the hour up to Year elements in an 32ms interval is a complete waste of time. IMO the hour is fine with 1 min update, day related can be updated per hour and the rest can be calculated once a day, or if the element is initialized.
With TW we would also have the possibility to dynamically create the SVG, so it could display all sorts of additional things. eg: upcoming events as part of the hour ring. ... and so on.
just some brainstorming
have fun!
mario