Sneed wants Feed and Seed to guess his birthday, and gives these possible dates:
May 15, May 16, May 19, June 17, June 18, July 14, July 16, August 14, August 15, August 17.
Feed knows the correct month, and Seed knows the correct day. Feed says, "I don't know Sneed's birthday, and I know Seed doesn't know." Seed says, "I didn't know at first, but I now know Sneed's birthday." Feed says, "Now I also know!"
When is Sneed's birthday?