› e.g. If the auction ends at 15:00, it will end at 15:00:00. If a late bid is received in the final 15 minutes, at 14:46, the auction will end at 15:01. If another user bids at 15:00, the auction will be extended again, and will end at 15:15, this will be repeated until the current offer has been held for a full 15 minutes.
Just for being sure, auction will end 15 min after last bid gl hf for all