Hey, look! I made a clock! The Apple Watch is now obsolete.
I am learning how to use the D3.js library to do data visualizations. It doesn't really make sense to consider hour, minute, and second as data to be "visualized", but this was a simple exercise to learn how to create graphical elements and animate them as the data changes.
Here is another way to view the clock along with its source: http://bl.ocks.org/kristopherjohnson/1db0d39a9ed54d224ee7