This is a binary clock I created in October of 2015. It is made using JavaScript and based on binary clocks that you can purchase online that light up individual LEDs to represent the hours, minutes, and seconds. The top row of the table indicates the hours, the middle indicates the minutes, and the bottom indicates the seconds.

To read the clock: look at which cells are "lit" up in a row. From right to left, the cells represent: 2⁰, 2¹, 2², 2³, 2⁴, and 2⁵, which are 1, 2, 4, 8, 16, and 32, respectively. So if the first and third cells on the top row are lit up (reading from right to left), that means 1 and 4 are lit up, indicating that the hour is 5.

Visit my binary clock repository on GitHub if you would like to see the code.