On "1-2-3-4-5-6-7-8-9-0 Day," tech lovers all over the world celebrated the moment when the clocks in the popular Unix computer operating system struck that exact stream of numbers. But on Feb. 13 ...

In the wee hours Sunday morning, Greenwich Mean Time, the Unix operating system will have counted its billionth second from the moment Unix computers recognize zero-time. By Farhad Manjoo.