Gammas and Periods

With regards to  this author, the Rifleman has noted an interesting trend. 

When the author in question first developed a #ManCrush on Pastor Locke, the results were as expected: 8 articles in the span of a month.  Locke rebuffed him, and the author was silent for a while. 

Four weeks later (remember that number), the author started up again. Six articles in the next month.   Again he was rebuffed. 

Then, eight weeks later (two four-week periods) came another article.  Then, in approximately four, eight, or twelve week intervals (give or take a couple of days) more articles are written, with just a couple of exceptions.  

Gee,  what happens in four week intervals?
To be fair, this did not explain it.  

Then, the Rifleman remembered that the author in question is  a Gamma. We all know that Gammas  act like women. So what female event happens about  every four weeks.

That explains a lot.