Hex clock
A precise hexadecimal color clock that goes the whole 24 hours color range, from #000000 to #235959.
Sun Clock
A 24-hour clock that shows sunrise, sunset, golden hour, and twilight times for your current location. It also shows the current position and phase of the moon, and its rising and setting times.
Metric Time vs Standard Time
What makes metric time so cool is that would make all the mental math we have to do when adding and subtracting time so much easier—especially when it comes to different timezones. Working with base-10 numbers is so much easier than trying to think in base-60, base-12, and base-24.
Epicycle Clock by Sophie Houlden