This is really bizarre. For 8/18, Every 20-30 tries I get a 10:35 time. I don't take it as I have a 10:40 and trying for something closer to noon.
Every time I see it I immediately search again and it's gone. Until 20-30 times later, and it comes back. If they were adding additional times, or people were cancelling, you'd think it would be different times that show up, and not the same exact time.