How to interpret a binary clock !

I was looking at the Google gadgets and one thing that really struck me was the Binary clock. It was interesting and a new thing that liked me a lot. I was curious to know how it worked.
The working goes something like this in just three simple steps :

1) It consists of 6 columns - first two are hours, next two are minutes and the last two are seconds.

2) Each row represents the binary equivalent value as 1,2,4,8.. from the bottom.

3) Then, we need to covert the highlighted dots (1's) in terms of decimal system by multiplying it with its binary equivalent.

4) Now sum the values of each column

Bingo !! There we will get the time in HH:MM:SS (24 hours).

Something like this below