As a clarification, it was any snipes set up on July 19th, not executed on the 19th.
I had a bid (snipe) that was executed on July 19th, but had been set up previously. I was charged for that snipe.
It least, that was the explanation that I received.
Note that this is not a complaint, as I appreciate the service. The message was unclear and open to various interpretations. I missed what they intended.