'On November 28th, 2012, Randall Munroe published an xkcd comic that was a calendar in which the size of each date was proportional to how often each date is referenced by its ordinal name (…) "In months other than September, the 11th is mentioned substantially less often than any other date. It's been that way since long before 9/11 and I have no idea why." After digging into the raw data, I believe I have figured out why.'

https://drhagen.com/blog/the-missing-11th-of-the-month/

The Missing 11th of the Month - David R Hagen

Personal website of David R Hagen, scientific software engineer

@texttheater this is an excellent post, thank you so much for the analysis and the writeup, it's easy and enjoyable to read.
@nicopap It's not my post
@texttheater oops my bad. Thank for the info. Doing my research now, finding out the post is 10 yo. Ah, thanks for sharing in any case