I saw this in the description for Ani's drinking mod on MTS:

"Please note that the game shows the remaining moodlet time as hours only for the first 24h, so if your hangover time is 25h, the moodlet will read 2 days. The game how-ever knows it's not two full days, but 25h."

Is it possible the moodlet is lasting something more like 25 hours, while showing 2 days?