Sure the are!
1st one could be February 28th 1953 or August 02, 1953
2nd one could be November 19th 1976 or January 19th 1976
However birthday notes are usually only worth something to the person that has that specific bday. So unless you already know someone with that bday its usually not worth keeping imho.
However Birthyear notes on the otherhand are highly collectable eg 0001953