Anders Celsius, who conceived a centigrade temperature scale where water froze at 100° and boiled at 0°, passed away #OTD, April 25, in 1744.
That's 32 + 25*9/5 = 77... July 10 in Fahrenheit.
(His colleague Carl Linnaeus flipped the scale a few years later, so that 0° was freezing and 100° was boiling.)