It turns out that August 13 is International Left Handers Day. I never celebrated because I never knew before!
Like our President, I'm left handed. I'm very left handed, having shown a strong preference for using my left hand when just a few months old (or so I've been told - I don't really remember) and continue to have a much stronger dominance than most left handers I know.
Best wishes to my fellow left handers, everywhere!