Do I have to ask our bank if the check was *mailed* December 31? Because it's dated December 31, according to Pub 526, "Time of making contribution. Usually, you
make a contribution at the time of its uncondi-
tional delivery.
Checks. A check you mail to a charity is
considered delivered on the date you mail it."
Or maybe December 31 it became "unconditional delivery" because the bank wasn't going to cancel it even if he called that day, because it's too hard to stop it from going out?
