Glad the prizes are arriving, but we've still got some work to do! There were no correct guesses today. We're getting to the end game now with only my brother's and sister's birthdates left, so I'm going to narrow the field a bit more. There are no winning birthdates in May or June (in addition to none in November and December). That leaves a just little over 100 possible dates left, and still 2 prizes remaining. Good luck on Day 9!
Here are the guesses to date (including @SD's Day 9 guess):
January 1, 2, 3, 4, 5, 6, 8, 10, 11, 14, 18, 23, 30
February 1, 2, 3, 5, 7, 8, 9, 10, 11, 12, 17, 22, 28, 29
March 3, 4, 5, 7, 9, 11, 12, 14, 15, 18, 19, 25, 26, 29, 31
April 1, 5, 7, 9, 10, 14, 15, 17, 18, 19, 20, 27, 29, 30
May (excluded)
June (excluded)
July 1, 2, 3, 4, 5, 6, 7, 12, 13, 14, 16, 17, 19, 20, 22, 24, 29
August 3, 6, 7, 8, 9, 10, 12, 14, 15, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 29
September 1, 2, 3, 4, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 28, 30
October 1, 3, 4, 7, 9, 12, 13, 15, 19, 24, 25, 27, 31
November (excluded)
December (excluded)