Dates are great to hit, but if you get there with nothing, with poor quality, with lackluster user support, with no excitement from your team.
Did you really hit a date?
Better, to focus on the Story, what are we delivering, what are we giving users, what are they getting.
If the Story is going to take too long to deliver in the date you have in mind, then perhaps you need to change the Story so it can fit in the date.
The only caveat to changing the story is to make sure that it is still a story worth telling.
