'Days' in the Bible

After the death of Saul, David returned from defeating the Amalekites and stayed at Ziklag two days.

Now the advice Ahithophel gave in those days was like someone asking about a word from God—such was the regard that both David and Absalom had for Ahithophel’s advice. >

The king said to Amasa, “Summon the men of Judah to me within three days and be here yourself.”

and handed them over to the Gibeonites. They hanged them on the hill in the presence of the Lord; the seven of them died together. They were executed in the first days of the harvest at the beginning of the barley harvest.

When they had gone through the whole land, they returned to Jerusalem at the end of nine months and 20 days.

So Gad went to David, told him the choices, and asked him, “Do you want three years of famine to come on your land, to flee from your foes three months while they pursue you, or to have a plague in your land three days? Now, think it over and decide what answer I should take back to the One who sent me.”