Here are clocks that not only show the 24-hour system, but make it as clear as daylight (and bright moonlight). Ideal for classrooms, airports and railway stations, banks and stock exchanges, or by your computer when you're in touch with the world.
In one style, the outer ring resembles a conventional clock; in the other it indicates daylight hours.
Also here, the ultimate geeky clock - hexadecimal (base-16) - 24-hour, of course, arranged by day and night.


















