I suspect the authors intention here was to present a simplified calendar with some nice guarantees (e.g. dates matching days), not a lunisolar alternative. The Positivist calendar ignores the lunar cycle to reduce complexity that others have in spades, including both the Gregorian and the Hebrew calendars.
Re:Posical, the Positivist Calendar for Python
by saraid216 on Friday April 18, 2014 @09:39PM
(#7612205)
It's actually unclear to me why we particularly care about how long it takes to orbit the Sun. Axial rotation, sure, the length of a day is important. But outside of that... why do we need particular units like weeks, months, and years at all?
Religion and seasonality. 7-days as a unit of measurement is written into unamendable documents hold as holy by all Judaist monotheisms (Jewish, Christian and Islamic). The ciclical experience of seasonal-weather and daylight-lenght changes are also too powerful to deny.
Re:Posical, the Positivist Calendar for Python
by notdonspaulding on Saturday April 19, 2014 @12:11AM
(#7612573)
Unrelated, why do you call Islam "judaist"?
AFAIK, Islam traces its roots back to Abraham, who was Judah's great-grandfather. So it would seem more appropriate to call it an Abrahamic religion, no?
by the way, no need to invent a new calendar. the Hebrew calendar is both solar and lunar.