Well seeing that serpent can actually copulate for up to an entire day, with an average of 10-12 hours, plus the fact that in omega verse lore rut can last three to four day days, I guess adjusted the time of what human rut combine with the duration of a serpent would look like...
I mean if you compare serpent to human, their mating ceremony last 12 times longer (if we take the average mating time for serpent). So if a normal human love making hour correspond to 3 days of rut for an alpha... time 12 you arrive to 5 weeks (36 days). But if you take the average mating time of 10 hours, you arrive at 4 weeks (30 days)...
So maybe not so random.(づ￣ ³￣)づ
This is the most well broken down pseudo science answere I have red on this site ever, thank you.
4 weeks is so random??? But well