Yes, it's because I made a decision a long time ago to use a distinctive date look, in both short and long varieties. The short date prioritizes stories from today by leaving out the day name, and yesterday gets the word Yesterday instead. Long date gets a Today/Yesterday. The rest is the NewsBlur look. I've given a lot of thought to how dates look and I think this covers international and domestic date formats, since it's in ascending order (date, month, year) in the short format.