It does not say that on the Mayan calendar, since there is no Mayan calendar for it to be on. The so called calendar is three different systems of counting time by counting days. The Maya are right about it though, they say nothing will happen. That's the 7 million of them still alive today.
And what exactly are these predictions that have come true? Who made them and when, and what evidence do you have that any prediction referred to any later event? What evidence have you that the predictions were not invented after the events?
The predictions for 2012 are not science, they are anti-science, delusion, gibbering superstition and fraud posing as real knowledge for profit. They are not even Mayan, they were invented in 2003.
There is no Mayan "calendar" here. There is however a count of days that is supposed to fill up a "bak'tun" about 2012, probably in December 2012 but it could be months either side. We are not sure exactly when the count started. In other words, the last day of the bak'tun (which is 144000 days long) might have passed and we didn't even notice.
There is no prophecy of the EOTW or any "spiritual change" from the Mayans. Anyone who claims that there is a plain liar, or ratbag. And there is no prophecy from any other culture, ancient or modern about 2012, except the fraudulent and criminal recent ones from confidence tricksters in our culture. Not even the descendants of the Mayans believe in this spurious drivel.
The prophecies for 2012 are lies based on lies. There are no alignments, no predicted solar flares, no rogue planets or any of the rest of the pseudo-scientific and fake-historical babble.
Governments do not usually lie about this sort of thing, because the evidence that debunks it is out of their hands and is internationally known, by both private people and public organisations which are not controlled by any government. So get rid of any "conspiracy" ideas you may have, they are bunk.
The entire thing is delusion, superstition and lies invented by the reality challenged and used by the ethically challenged to make money from the mentally challenged and anyone who promotes it is a scum sucking bottom feeder and that particularly includes the Coast to Coast radio slime and the greed-ridden suits who run the History Channel.
It's all about making money from the ignorant, the stupid and the gullible