Template:Selected anniversaries/April 29

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  1667: Physician, satirist, and polymath John Arbuthnot born. He will invent the figure of John Bull.

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  1756: Inventor, astronomer, mathematician, clockmaker, and surveyor David Rittenhouse constructs an exceptionally accurate orrery, which he will later use to create an early form of time crystals (nonfiction).

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  1854: Mathematician, physicist, and engineer Henri Poincaré born. He will make many original fundamental contributions to pure and applied mathematics, mathematical physics, and celestial mechanics.

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  1892: Mathematicians John Havelock and Henri Poincaré co-publish a pioneering paper on applications of Gnomon algorithm functions to the early detection of emergent catastrophic events, forecasting the Chernobyl disaster to within 98.37% accuracy.

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  1974: Watergate scandal: United States President Richard Nixon announces the release of edited transcripts of White House tape recordings relating to the scandal.

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  1985: Asclepius Myrmidon discovers an unlicensed halting problem "which will almost certainly result in a major radiation release event within a year."

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  1986: Chernobyl disaster: American and European spy satellites capture the ruins of the 4th Reactor at the Chernobyl Power Plant.

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  1987: Steganographic analysis of The Shovel unexptedly reveals "at least a terabyte" of encrypted data, apparently a transdimensional contract requiring Egon Rhodomunde and Baron Zersetzung to "blow up a nuclear power plant, and this time do it right".

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  2018: The two creatures depicted in Two Creatures 3 officially petition the United Nations for political asylum.