'Day's' in the Bible

Now a wind went out from the Lord and brought quail from the sea, and let them fall near the camp, about a day's journey on this side, and about a day's journey on the other side, all around the camp, and about three feet high on the surface of the ground.

while he went a day's journey into the desert. He went and sat down under a shrub and asked the Lord to take his life: "I've had enough! Now, O Lord, take my life. After all, I'm no better than my ancestors."

David left Asaph and his colleagues there before the ark of the Lord's covenant to serve before the ark regularly and fulfill each day's requirements,

When Jonah began to enter the city one day's walk, he announced, "At the end of forty days, Nineveh will be overthrown!"

When those hired about five o'clock came, each received a full day's pay.

but (because they assumed that he was in their group of travelers) they went a day's journey. Then they began to look for him among their relatives and acquaintances.

Then they returned to Jerusalem from the mountain called the Mount of Olives (which is near Jerusalem, a Sabbath day's journey away).

Then I heard something like a voice from among the four living creatures saying, "A quart of wheat will cost a day's pay and three quarts of barley will cost a day's pay. But do not damage the olive oil and the wine!"