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TIL that a “Jiffy” is a real unit of time. Defined by Gilbert Lewis in 1926 as the time it takes light to travel 1cm (~33.3564 picoseconds), it has since been redefined in astrophysics & quantum physics by Edward Harrison as the time it takes for light to travel 1 fermi (or, 10^-15m: ~3×10^-24sec):

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5Y4mn TIL about The Filibuster of 1890 - a Plot by San Diego conspirators to conquer and annex Baja California
ADA5n TIL that when Queen Elizabeth got married in 1947, she had to save up post-war clothing ration coupons to pay for her wedding dress.
vP7j TIL that corporal punishment (spanking) is still practiced in the United States and in the 2006-07 school year more than ¼ million kids were spanked. A disproportionate number of those hit were children with disabilities
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1aLdX TIL There was a Beluga whale that learned how to mimic human speech and additionally told a diver to get out if his tank