Mimics wall-art "word clocks" that show time in five-minute intervals as a selection of highlighted words, e.g.:
Or in Spanish:
This demo was built to showcase TDD (Test Driven Development) in my session at CodeMash 2020. The commit history is arguably more instructive than the final code, particularly in conjunction with the slides.
The slides can be found at roub.net/pres/codemash2020.
You can watch the actual presentation at Pluralsight, for free.
Open demo.html in a reasonably-modern browser and the clock should run, updating at the various 5-minute marks. Click anywhere on the clock face to toggle between English and Spanish