A very special valentine’s day

Maybe you already knew, there is something special 00:31:30 Saturday February 14, 2009 in Europe/Amsterdam?

It’s 23:31:30 Friday February 13, 2009 in UTC. Now that’s an interesting moment.

At that time, how many seconds since 00:00:00 Januari 1, 1970 is it again? Well, not exactly 1234567890 seconds ago anyway.

But it so happens to be that unix systems keep time by counting the seconds from 00:00:00 Januari 1, 1970. And unix time does not count the leap seconds, so guess what… When it is 23:31:30 Friday February 13, 2009 in UTC or 00:31:30 Saturday February 14, 2009 in Europe/Amsterdam on your system’s clock, the internal unix time counter will indeed contain the value 1234567890.