It means not only completion of steaming, but also, for toji and other workers in the brewery, the end of the season for sake brewing, during which they are not allowed to relax their attention, has come to the end and the arrival of the day when they can give themselves a break.
それは単に蒸しの作業が終わることだけでなく、杜氏や蔵人たちにとっては気の抜けない酒造りの季節が終わり、ほっと一息つく日の到来をも意味する。