Newton's & Kepler's age of the earth calculations - References? "Everybody knows" that Newton and Kepler calculated the age of the earth. My problem is that, whilst "everybody knows" this, no-one gives a reference that I can read for myself. 

If, for example, I want to read what Thomas Burnett believed, I download a copy of Telluris Theoria Sacra and I can read for myself that he accepted the reality of Noah's flood. The same is true of St Augustine's beliefs as there are several online translations of City of God Against the Pagans.

But Newton and Kepler? 

Zilch. Sweet F.A. Absolutely nothing. 

Even when a website  references a text, either I can't find the text, or there is no age-of-the-earth calculation in the text that I can find.

So, did either Newton or Kepler calculate the age of the earth, or is this just an urban myth? If it's true, does anyone have references that I can look at for myself. These will have to be secondary references (English translations) as I expect the actual primary reference to be in Latin, and sadly, I only read English.
Your question may be better suited to either SE History or SE History of Science and Mathematics. The date of the so called creation of the Earth has nothing to do with Earth Science.

For Kepler I found he wrote the book KANONES PUERILES, in it he calculates the creation date to be 27 April 4997 BC.

The published works of Newton reveal little. Some authors on Newton mention an unpublished document he wrote in either 1704 or 1705. Any calculations he may have done regarding the so called date of creation may be in his unpublished writings.

You may need to review the bibliographies of authors who wrote biographies on Newton, such the 1855 book by Sir David Brewster, Memoirs of the Life, Writings, and discoveries of Sir Isaac Newton, volume 2.