Clockwatch

A short guide on how to read a Binary Clock.
A Binary Clock often has two different configurations: BCD mode and binary mode. The Binary Clock can display the clock in several different formats (the columnar format below being just one of them). There is also a horizontal format that displays each digit as a row.

BCD mode is the more common mode and is what you would probably find if your bought a real “hardware” binary clock from a gadget store. Most newer Binary Clocks automatically defaults to BCD mode. BCD mode is the easier of the two modes to interpret and is described below.

Splits each number into two digits to make them easier to read.
The picture below demonstrates how to read a binary clock in what we call “true binary mode”. True binary mode is for diehard binary clock users who want to make the clock as hard to read as humanly possible. It’s also the most accurate representation of how numbers are stored in your computer.