Who is John P. Pratt?

I love puzzles, science, math, calendars, and enjoy connecting ideas from a wide varienty of disciplines. I have degrees in physics and math from the U. of Utah, and a Ph.D. in astronomy from the U. of Arizona. I teach astronomy at a state college and keep notes for that class on this web site. I also do computer programming, have three software patents, and host a few websites such as for the Utah Table Tennis Clubs.

Most of my publications have been about chronology, so you probably don't want to read them. I have written a calendar conversion program to convert from our calendar to others.

I invented a pictorial periodic table which I hope might make chemistry more fun and can be used as memory pegs for memorizing long lists of other items too.

If you like tough brain teasers, I think I have found a great logic puzzle in the Bible which you might want to try.

There is a brief life sketch of me, of my wife, and of some of our ancestors in the genealogy section of these pages.