The End of the World - a major Correction

Seeing's we're all still here, a feel a few explanations are in order. It would appear that when calculating the date of the End of the World, Young Keith divided by the radius of the Stonehenge outer sarsen circle. Clearly he should have used the outer ditch. Also, he employed the height of the Great Pyramid as it is now, when he should have included its original marble cladding.

The End of the World, it turns out, is now scheduled for 10th January 2765.

Sorry to have worried you all.