Inca mesoamerican calendar
Vegesimal Base 20
dot =1 bar =5 shell=0
260 days - pregnancy - eclipses?!
13 X 20 = 260
13 months (20 days)
13 within 260 within 365(solar cycle - 365.25 days really)
(Leap year)
Long Count
K’in - 1 day
Winal - 20 k’in - 20 days
Tun - 18 winals - 360 days
K’atun - 20 Tuns - 7200 days
B’aktum - 20 k’atus - 144000 days
Last 100 years
Stalin - 60 million
Hitler - 20 million
Mao - 40 million
Polput - 5 - 7 million
Just last 60 years
Quipu - decimal and dimensional
Coloured Strings with knots record information