'Sabbath Day' in the Bible

Then returned they unto Jerusalem from the mount called Olivet, which is nigh unto Jerusalem, a Sabbath day's journey off.

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

And on the sabbath day we went forth without the gate by a river side, where we supposed there was a place of prayer; and we sat down, and spake unto the women that were come together.

and Paul, as his custom was, went in unto them, and for three sabbath days reasoned with them from the Scriptures,