It's quite impressive, beautiful and smooth in motion.

I have to second what someone else said, it could be made into an amazing wall clock (and even a small desk unit). There is a lot that could be optionally (settings) done to manipulate its aesthetic qualities in various directions to match personal preferences, times of day, events, and so on.

Would be cool to replace the years with "Year in Decade", "Decade in Century", "Century in Millennium".....

Or maybe just have year go from 00-99 and repeat as people commonly do anyway.

Current implementation of year definitely doesn't make sense because it doesn't cycle.

I admit I was probably influenced by thinking of Anathem

One of my favorite Stephensons.

I have the complete OPPOSITE experience: the motion is jerky and inconsistent, like the seconds are struggling then catch up. (Firefox 74 on Windows 10 18363)

Concur. Since someone described it as 'beautiful and smooth' I opened it in Chrome.. beautiful and smooth (80% of the time). Since it's "just" SVG transforms perhaps this is a firefox:chrome difference (that said, I've built SVG transforms that run fine on both). It does invent the universe 31.25 times/second.. perhaps there's some JS optimizations we can do. [Update: basically smooth in IE11 too]

Fixed. In Firefox, verify the GPU is enabled in `about:support`. In this case, I had to reset `layers.acceleration.force-enabled=true`.

I'm good with the same browser and OS, machine's an i3 7100 with 8GB RAM using the CPU's graphics, so nothing special at all.