It was almost dark when the trio left the village. Though the chief invited them to stay a few more days, they couldn't as the deadline was near.
They took three days to arrive instead of two days, and then the trio ended the slavers and the bandits, their actual mission. Five days had passed, and two days would be what it would take for them to return to the academy, as long as nothing out of the ordinary happened during their journey and nothing delays them.
It means they would only have three days.
After clearing out the bandits, the previous day, they stayed the night and participated in the celebration party that the village threw.
They stayed behind because the trio had not counted the loot, and it was almost dusk. So, starting now didn't feel good for them.
When they went through the loot, the trio found some disturbing things. These needed to be handed over to the authorities that would be arriving from Woodstone City the next day.