'Sabbath Day' in the Bible

And the burned offering offered to the Lord by the ruler on the Sabbath day is to be six lambs without a mark on them and a male sheep without a mark;

And when the ruler makes a free offering, a burned offering or a peace-offering freely given to the Lord, the doorway looking to the east is to be made open for him, and he is to make his burned offering and his peace-offerings as he does on the Sabbath day: and he will go out; and the door will be shut after he has gone out.