Time is fairly complex subject but we are used to taking it for granted. One reason for that is that these days computers keep track of time for us so we rarely need to think about it. The way that they do this is very interesting and taking a look at how computers understand time can teach us a lot about what time is to us. What's more, in our look into the world of computer time, we'll uncover an impending disaster that is to the Y2K problem as Krakatoa is to the gentle rumblings of your stomach on a hungover morning.