Here are some famous people who were born on 25th December [from wikipedia]:
1624 Sir Isaac Newton
1876 Adolf Otto Reinhold Windaus was a German chemist who won a Nobel Prize in Chemistry in 1928 for his work on sterols and their relation to vitamins.
1904 Gerhard Herzberg was a pioneering physicist and physical chemist, and Nobel Laureate in chemistry. Herzberg's main work concerned atomic and molecular spectroscopy. He is well known for using these techniques that determine the structures of diatomic and polyatomic molecules, including free radicals difficult to investigate in any other way, and for the chemical analysis of astronomical objects.
1906 Ernst August Friedrich Ruska won half of the Nobel Prize in Physics for his many achievements in electron optics.
and many more.
However, Jesus was not born on 25th December.
I would support changing the name of coming holiday season to be NewtonDay.