Multiple choice general knowledge science & technology Issac Newton was born on 16 January 1469 4 January 1643 31 March 1727 4 March 1727 Reveal answer Fill a bubble to check yourself B Correct answer Explanation Newton's birth date is 4 January 1643 in the Julian calendar. This corresponds to 25 December 1642 in the Gregorian calendar, but the given answer matches the historical record under the Old Style dating system.