I haven't used the Generate Rows tool a lot, so I didn't think about having it just populate the dates, rather than a numeric row ID. So I used a few more tools than necessary, but I got there anyway.
Also, doing it a couple days late, I had to manually set the date (rather than using DateTimeToday()) to get my results to match exactly.
First post and first challenge completed. I am betting there are more efficient ways to accomplish, but I got the correct result with about 20 minutes of fumbling around. Loving the Alteryx.