Even though I’ve been doing trivia on my Harris Challenge for about 30 years (you can hear it live Fridays at 5:15pm CT on KTRS — or later in the podcast version on this site), I never knew there was such a thing as National Trivia Day. Apparently, it’s today, and lots of folks on Twitter are posting a mix of the interesting and the silly, using the hashtag #NationalTriviaDay: