This is the number of days in 32 months leading to a 945/32 day = 29.53125. It is almost exact and hence a real phenomenon accurate to one part in 44743! Secondly, the ratio could be handled using geometrical, metrological or factorial means (see below) at Carnac and later cultures inheriting those means.

Title Created Date
Double Resonances within Three Lunar Years 13 July 2018
The Samian Foot (of Samos), Saturn and the Moon 04 June 2018
Early Numeracy at Table des Marchands 31 March 2018
Lunar Counting from Crucuno Dolmen to its Rectangle 24 February 2018
Megalithic application of numeric time differences at Le Manio 07 February 2018