Dozenal numbering system

Here's my paper the Mighty Dozen, Musings about a dozenal system.

• Here's a spreadsheet that allows you to see the calendars discussed in the Mighty Dozen paper.

• Here's a web app that displays the time with various clock options discussed in the Mighty Dozen paper.

• Here's a Google spreadsheet with a JavaScript extension which has functions for dozenal and decimal conversion and formatting, including fractional parts. There’s a tab with general instructions for using the conversion functions to create your own spreadsheet for math in dozenal. There’s a second tab that uses the functions to create a sum of products template.

Here's 2 calculator web apps that support base twelve and base ten:

• • RPN Crunch

  • Simple Dozenal

Here are Blackjack and Poker web app games, that use a 5 dozen card dozenal deck, and dozenal chips.

• Dozenal Blackjack

• dozenal Poker

Here are general external links with dozenal information:

• the American dozenal society, 

• the British dozenal society,

• Wikipedia, duodecimal numeral system

• John Baez, My Favorite Numbers, 5, 8, 24; not directly dozenal related, but fascinating exploration of numbers that come up when considering packing densities in multiple dimensions and string theory. Perhaps not so coincidentally, these numbers come up when working in dozenal. 5, awkward, but as 2 and 3's nearest prime neighbor, a number we should get to know. 8 = 2/3 of dozen = 2^3. And 24 =  2 dozen.