As you may (or may not) have noticed, my default practice has been to do a blog post three times a week: on Monday, Wednesday and Friday mornings.
I'm now back from sabbatical (sigh) and the summer break (sigh2) and my schedule tends to be rather hectic, especially on Wednesdays and Fridays.
So sometimes posts will be a little late or a little early (like the one I'm going to do in a few minutes). I'm still sticking to the three times a week, and roughly the same intervals between posts . . . but with a little elasticity.