Quoting someone a large time range for something to occur, even though it will probably happen much sooner.
I always have to tell my customers that they'll get an e-mail within 24-48 hours, even though they get it immediately.
Ah, a good ol' bureaucratic promise. You just know that one person didn't get that e-mail within 30 seconds and they were pissed; so now, you have to tell everyone they'll get it within 24-48 hours.
An event you hold with one or more friends, where you share a meal the day before Thanksgiving.
You: Hello friend
You: Would you like to join me for Friendsgiving?
Friend: I'd be delighted to! It will be the day prior to Thanksgiving, yes?
You: That's correct!