When talking about time in between honing sessions there is so many variables I find it almost useless comparing myself to someone else.
No one will ever get good at honing by just refreshing one razor once in a blue moon. Hence someone who is proficient at honing could keep a razor keen longer than someone who isn't. Now throw razor make, razor grind, skin type, hair type, technique, frequency and just simple personal preference into the mix and we come to our infamous YMMV.
I love to hone my own razors (never thought I'd say that)
I'll test a razor with multiple finishing hones just to see which one i like with that particular razor but to answer your question, I don't know, I just get bored and hone it anyway :)