This the Mayan/Nostradamus/Biblical, Doomsday, Apocalyptic countdown clock that will tally the days, hours, minutes and seconds remaining until nothing happens on December, 21st 2012.
If you're in Japan, New Zealand, Australia or a number of other regions in the East as the rest of the world gets close to the date, you may have already experienced nothing happening, in which case you may safely disregard the countdown.
In order to better utilize the time you have until nothing happens, I strongly recommend living every moment of your life as if it's your last. After all, you never know if things will come to an end before nothing happens.