'On that Day' in the Bible

And they gathered together to Mizpah, and drew water, and poured it out before Jehovah, and fasted on that day, and said there, We have sinned against Jehovah. And Samuel judged the children of Israel in Mizpah.

And as Samuel was offering up the burnt-offering, the Philistines drew near to battle against Israel; but Jehovah thundered with a great thunder on that day upon the Philistines, and discomfited them; and they were smitten down before Israel.

And the king said to Doeg, Turn thou, and fall upon the priests. And Doeg the Edomite turned, and he fell upon the priests, and he slew on that day fourscore and five persons that did wear a linen ephod.

And David said unto Abiathar, I knew on that day, when Doeg the Edomite was there, that he would surely tell Saul: I have occasioned the death of all the persons of thy father's house.