'Three Days' in the Bible

I gathered them by the river that goes to Ahava and we camped there for three days. And I looked at the people and the priests, I found no one there from the sons of Levi.

We came to Jerusalem and remained there three days.

Anyone who did not come within three days, by decision of the officials and elders, all of his possessions would be devoted to God, and he himself would be excluded from the assembly of exiles.

Then all the men of Judah and Benjamin assembled in Jerusalem within the three days. It was the ninth month on the twentieth day of the month. All the people sat in the public square of the house of God trembling because of this matter and from the rains.