'Sabbath day' in the Bible

Then they returned to Jerusalem from the mountain called Olivet, which is near Jerusalem, about a Sabbath Day's journey distant.

Then they themselves, passing through from Perga, came to Antioch in Pisidia. Here they went into the synagogue on the Sabbath Day and sat down.

On the Sabbath Day we went outside the city gate, to a riverside, where we supposed there was a place of prayer; and we sat down and talked to the women who had gathered there.