Demi-Decadays

Goddam trivia lady had a wrong answer last night!  It could've been a total deal-breaker too!  Our team was in the running for the $100 gift certificate going into the last question (which we got wrong anyways, but that's beside the point).  The question was: Which U.S. state produces the most Christmas trees?  I knew the answer was Oregon and I went through all the work of convincing my team that it wasn't Vermont only to have the stupid answer lady give 'North Carolina' as the answer.  Of course, nobody got it right, and it was a 5 point question too!  That really grinds my gears.  Well, whatever, it was still fun.  Gears are grinded a little though.  Another thing that grinds my gears is being non-metric.  Get with the friggin 21st century U.S.!  Way to be the last guy to show up at the party.  What I don't get is why nobody ever converted the 12-hour clock to metric.  Seems kinda stupid to have 24 hours in a day.  Should be 20...ummm...demi-decadays?  Alright, I gotta work on the grammatical part of that, but seriously.  If I want to figure out how many hours are in a month, I'm gonna have to sit here and think about it.  If I wanna find out how many demi-decadays are in a month it's simple: 20 x 30 = 600.  Unless there is 31 days, which someone should fix too!  I bet if we converted to demi-decadays we could iron that snafu out real easily somewhere along the lines.  Figure out how to account for leap years/seconds too while we're at it.  God dammit!  I bet the friggin Mayans could've figured this junk out better than this.