'All night' in the Bible

“I regret that I have made Saul king, for he has turned back from following Me and has not carried out My commands.” And Samuel was distressed and cried out to the Lord all night.

Then Saul immediately fell full length upon the ground and was very afraid because of the words of Samuel; also there was no strength in him, for he had eaten no food all day and all night.

all the valiant men rose and walked all night, and took the body of Saul and the bodies of his sons from the wall of Beth-shan, and they came to Jabesh and burned them there.