What time is the world supposed to end?

It is 12/21/12 at long last, I just noticed, after paying some some attention to the real, albeit mini, apocalypse that is Draco the Blizzard. I was going to note that the world hasn't ended, but there's the question of what time the Mayans pinpointed on this Day of Days:

I know the world isn't really going to end today, and I think it's absolutely ridiculous that anyone would believe it is. But my 11-year-old brother thinks it's going to end, and I want to be able to go scream "I told you so!" in his face as soon as possible.

Thanks.

ABC is checking midnight in each of the world's time zones. Weather prediction noted:



I like NASA's reassuring web page. Excerpt:

Q: Does the Mayan calendar end in December 2012?

A: Just as the calendar you have on your kitchen wall does not cease to exist after December 31, the Mayan calendar does not cease to exist on December 21, 2012. This date is the end of the Mayan long-count period but then — just as your calendar begins again on January 1 — another long-count period begins for the Mayan calendar.

Wikipedia has a huge article on the somewhat larger topic "2012 phenomenon." Excerpt:

Many assertions about the year 2012 form part of Mayanism, a non-codified collection of New Age beliefs about ancient Maya wisdom and spirituality.... Archaeoastronomer Anthony Aveni says that while the idea of "balancing the cosmos" was prominent in ancient Maya literature, the 2012 phenomenon does not draw from those traditions. Instead, it is bound up with American concepts such as the New Age movement, millenarianism, and the belief in secret knowledge from distant times and places. Established themes found in 2012 literature include "suspicion towards mainstream Western culture", the idea of spiritual evolution, and the possibility of leading the world into the New Age by individual example or by a group's joined consciousness. 

Is there a bigger crock than secret knowledge from distant times and places?