We mark the date 12/12/12 with a video about the merits of the dozenal/duodecimal system. Numberphile regular Dr James Grime makes the case. More about James at www.singingbanana.com/ Website: www.numberphile.com/ Numberphile on Facebook: www.facebook.com/numberphile Numberphile tweets: twitter.com/numberphile Videos by Brady Haran Brady's other channels include: www.youtube.com/periodicvideos (Chemistry stuff) www.youtube.com/sixtysymbols (Physics and astronomy) www.youtube.com/DeepSkyVideos (Space stuff) www.youtube.com/nottinghamscience (Science and behind the scenes) www.youtube.com/foodskey (Food science) www.youtube.com/BackstageScience (Big science facilities) www.youtube.com/favscientist (Favourite scientists) www.youtube.com/bibledex (Academic look at the Bible) www.youtube.com/wordsoftheworld (Modern language and culture) www.youtube.com/PhilosophyFile (Philosophy stuff) www.youtube.com/PsyFile (Psychology stuff)