On the 6th day, of the 6th month, of the 6th year...

...his day will come.

New Testament, Revelation 13:16-18 :

Also it causes all, both small and great, both rich and poor, both free and slave, to be marked on the right hand or the forehead, so that no one can buy or sell who does not have the mark, that is, the name of the beast or the number of his name. This calls for wisdom: let anyone with the understanding calculate the number of the beast, for it is the number of a person. It's number is six hundred and sixty-six.

Of course, this isn't the 6th, but the 2006th year, but still...!

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