I do understand the importance of limiting the time in which a bounty can be awarded (I think).
However I wonder if mods have the ability to award an expired bounty in exceptional circumstances.
On this question I have totally missed the deadline to award the bounty to the person who has rightfully deserved it. It was totally my fault, but don't see why that user should not be awarded the bounty for the great contribution.
The answer already has 2 votes, the second came right after the bounty has expired.
If I had enough reputation, I would award the bounty again, but that is not possible at the moment, which makes me feel very bad about it.
I also really think that there should be a few days more time to award a bounty. Or perhaps it should not be strictly time based, but log-in/session based. Like for example prompt the user for a last chance to award the bounty when the user returns after the expiration time.