National Periodic Table Day, an “unofficial” national holiday, was founded in May 2015 with the goal of promoting the challenges that were overcome to develop the modern periodic table.  Mr. David T. Steineker, Author, Inventor, and chemistry teacher at Jefferson County Public Schools in Kentucky is inspired by those challenges and took initiative to celebrate National Periodic Table Day based upon John Newlands first table of the elements published on February 7, 1863.