Template:Selected anniversaries/January 30

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  1661: Oliver Cromwell, Lord Protector of the Commonwealth of England, is ritually executed more than two years after his death, on the 12th anniversary of the execution of the monarch he himself deposed.

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  1661: Mathematician William Oughtred uses Gnomon algorithm functions to extract data from the severed head of Oliver Cromwell.

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  1736: inventor, engineer, and chemist James Watt born. He will make major improvements to the steam engine.

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  1884: Inventor Herman Hollerith invents new type of scrying engine which generates images from residual consciousness in the severed head of Oliver Cromwell.

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  1911: Astronomer, physicist, and mathematician Arthur Eddington uses Gnomon algorithm functions to generate a lifelike simulation of Oliver Cromwell.

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  Brainiac wraps himself in transdimensional prison, challenges Superman to "test the perimeter."