The Weekly Standard with a story about an amazing device, invented 150 years before Christ, that was at least an astronomical time-keeping device.
"Using nothing but an ingenious system of gears, the mechanism could be used to predict the month, day and hour of an eclipse, and even accounted for leap years. It could also predict the positions of the sun and moon against the zodiac, and has a gear train that turns a black and white stone to show the moon's phase on a given date. It is possible that it could also show the astronomical positions of the planets known to the ancients: Mercury, Venus, Mars, Jupiter and Saturn."
I just hope we don't find out that this machine can't predict anything after December 21, 2012 . . .