According to the Julian calendar, used in England at the time, Sir Isaac Newton was born on
Christmas day, December 25,1642 which would actually be, January 4,1643 on the Gregorian
calendar that we use now after Pope Gregory XIII's edict in 1582, but before England changed
in 1752. Sir Isaac Newton was born the same year Galileo died.
But, nonetheless, I still like to wish people a Happy Sir Isaac Newton Day on December 25.
I also hope that you all had a happy Winter Solstice Day back on December 21st.
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