At Christmas, 1890, or Newtonmas, 248, for the first time, the members of the Newtonkai, or Newton Association, met in the Physical Laboratory of the Imperial University, to hear each other talk, to distribute appropriate gifts, and to lengthen out the small hours with laughter and good cheer.
Source: wiktionary
Two of my friends (both Jewish) take 25 December as the holiday Newtonmas, in celebration of the birth of Sir Isaac Newton.
Source: wiktionary
So why not put some sense into your festivities and celebrate Newtonmas this year?
Source: wiktionary
On the first day of Newtonmas, Sir Isaac gave to me / The acceleration of gravity[…]
Source: wiktionary
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