'Appointed Feasts' in the Bible

As the flock for sacrifice, as the flock of Jerusalem in her appointed feasts, so shall the waste cities be filled with flocks of men; and they shall know that I am Yahweh.

In a controversy they shall stand to judge; according to my ordinances shall they judge it: and they shall keep my laws and my statutes in all my appointed feasts; and they shall make my Sabbaths holy.

It shall be the prince's part to give the burnt offerings, and the meal offerings, and the drink offerings, in the feasts, and on the new moons, and on the Sabbaths, in all the appointed feasts of the house of Israel: he shall prepare the sin offering, and the meal offering, and the burnt offering, and the peace offerings, to make atonement for the house of Israel.

But when the people of the land shall come before Yahweh in the appointed feasts, he who enters by the way of the north gate to worship shall go forth by the way of the south gate; and he who enters by the way of the south gate shall go forth by the way of the north gate: he shall not return by the way of the gate by which he came in, but shall go forth straight before him.