Oh that. Also don't forget about "auto release" at noon before a golden or vacation day, as well as calling to be released earlier in other cases. You will rarely have to sit that 12th hour of short call while actually having to potentially make a 2 hour call out. Especially in NYC where 3+ is reasoable to the "other airports". At about the 9-10 hour mark, there really isn't much they can do with you and are usually (not always) reasonable about granting a release. If for any other reason than it helps them by resetting your future availability that much sooner.