day 10 does exist current build goes to day 17 A & B. It is said a few times unless you're on sals route then its said once. The best hint is what dave thinks about at the vault ''what is the worst case senario''.
I mean... unless the password is some other variant of something i've already tried, i might not know the actual word that it wants me to input. It's so hard to explain what i've already tried without potential spoilers though. Y'know, for anyone who could scroll by this
update: GOD EFFING DAMMIT WHY IS IT ALWAYS THAT ONE WORD, thank you for the hint.