'Day's' in the Bible

but supposed Him to be in the caravan, and traveled a day’s journey; and [then] they began searching [anxiously] for Him among their relatives and acquaintances.

On the next day he took out two denarii (two days’ wages) and gave them to the innkeeper, and said, ‘Take care of him; and whatever more you spend, I will repay you when I return.’

“Or what woman, if she has ten silver coins [each one equal to a day’s wages] and loses one coin, does not light a lamp and sweep the house and search carefully until she finds it?

Then the disciples returned to Jerusalem from the mount called Olivet (Olive Grove), which is near Jerusalem, [only] a Sabbath day’s journey (less than one mile) away.

And I heard something like a voice in the midst of the four living creatures saying, “A quart of wheat for a denarius (a day’s wages), and three quarts of barley for a denarius; and do not damage the oil and the wine.”