> Approximately 24 hours after the end of the bounty period (once the grace period ends), if the bounty starter has not manually awarded the bounty, the bounty may be awarded automatically. This is so that if the bounty owner chooses not to award the bounty to any answer, those who answered the question based on the bounty will still be rewarded for their effort.
If the author offered the bounty, and accepted an answer that was posted after the bounty was started, that answer is awarded the full bounty.