[Aztlan] 3M-day year

[martha noyes]

The Lounsbury article is available at:
www.mesoweb.com/pari/publications/RT03/Rationale.pdf

3M appears several times in the paper - p.2 - quoting Thompson, "Very  
frequently the LR [long reckonings] is a multiple of the 260-day  
count, or it may be a multiple of the 3M-day year",  p.3 - "As  
already mentioned . . .divisible by 260 or by 3M", p.3  "the  
'computing year' of 3M days", p. 4 - Unlike many of the CN [companion  
numbers], the one in this instance is not evenly divisible by 260 or  
780, but it is by 3M", p. 8 - "Condition No. 2 may have involved . . . 
3M or 117", "we may surmise . . .same position in the 3M-day cycle  
(the so-called computing year), or else that it have the same  
position in the 819-day cycle", "Whether the 3M-day cycle . . . or  
the 1820-day cycle . . . were ends in themselves or were only  
reckoning devices"

Thanks