Hello Atanu

This is Menna from Brazil. I once read a very interesting book by Zerubavel "The 7-day circle", are you aware of that? I can send you the full reference if needed. I konw that Fanz Halberg has worked on some circaseptan rhythms back in the 70's. A very interesting question concerns the social construction of the week, perhaps biology has a foot on what has been considered as part of religion traditions.

Best regards, Menna.

Dear Menna

Thank you for your answer. Send me the full reference of the title, "The 7-day circle."

Best regards, Atanu

Dear Atanu, please find the book at

http://press.uchicago.edu/ucp/books/book/chicago/S/bo3615508.html

Sir

I have no idea about the circaseptan rhythm. Why there should be circaseptan rhythm. It's all human  calendar..........

Hello Atanu:

Franz Halberg published on this topic for many years, and we discussed this many times.  While Franz was rather settled on the matter, continued research, which has now a deep metabolomic and genomic foundation, has demonstrated that the average human many-days (multidien) rhythm is 8-9 days.  In the deep human evolutionary past it was 7-8 days.  It would be interesting and provocative to suggest that the Roman calendar has a basis in metabolism, though a sticking point is that not only is there variability in the length of the rhythm, we are certainly not synchronized.  However, I agree that it would be worth continued thinking about the problem.

Hi Atanu,

A paper on the 7-d rhythms has just been accepted and will be published, I hope soon, by CBI. This is a review paper that takes into account the several facets of circaseptans including social and religious aspects.

I'll send you the PDF in due time. Warmly