More about pedantry and weeks

We were having a fun and interesting conversation about ways to say that something happens one time during a 7-day period. And then yesterday I ran across one in the wild.

This is the chat message I sent to a colleague:

*In other topics, I'm looking at (redacted) and this sentence is bad: "My goal is to post 4 videos, once a week on Sundays." I truly thought it meant that the creator would post 4 videos EVERY Sunday. I had to look at the timelines in the table to learn differently.*

And yeah*.* If I ever get my paws on that particular document, I'll be re-writing that sentence.