'Sabbath day' in the Bible

Then they returned to Jerusalem from the mount called the mount of Olives, which is near Jerusalem, a sabbath-day's journey off.

But they, passing through from Perga, came to Antioch of Pisidia; and entering into the synagogue on the sabbath day they sat down.

And on the sabbath day we went outside the gate by the river, where it was the custom for prayer to be, and we sat down and spoke to the women who had assembled.