It means, the today is the start of……my two weeks Christmas holiday from work! :D
…Oh yeah and the end of the 13th Baktun I.E. (the end of the world)
But on a serious note, it really is a rather spectacular day. Aside all the stupid nonsense about the end of the world that has really taken the significance of today down a few notches.
We are here to witness the end of the long count calendar that belonged to a truly spectacular civilization that existed thousands of years before our own.
It's a shame that most can't enjoy today for what it really is.
Happy 13th Baktun people ;)