I was wrong about the Judge's Hostas last year. It's not on his wife's birthday that they bloom but on their anniversary. Today. August 15. The photos were taken a couple of days ago when the blooms seemed to be timing their display to the minute.
It was early evening when Heidi and I walked over to take a look at them, the perfect time as the flowers open in the evening and their scent is given an extra boost by the phlox that is also blooming nearby. I did a little research and it looks like these are Hosta Plantaginea also known as August Lily.