What day of the week was July 5, 1687?
The day of the week July 5th, 1687 fell on was a Saturday.
Isaac Newton publishes PhilosophiƦ Naturalis Principia Mathematica.
The day of the week July 5th, 1687 fell on was a Saturday.
Isaac Newton publishes PhilosophiƦ Naturalis Principia Mathematica.