When we go to a page like https://stackoverflow.com/questions/tagged/python?sort=featured we see the active Bounties on a certain tag (in this case, Python).
When we put the cursor on the blue bounty box in the list we can see the message
this question has an open bounty worth XX reputation
Wouldn't it be useful to have the end time of the bounty so that it shows... ?
this question has an open bounty worth XX reputation ending in YY days