'Festival' in the Bible

They celebrated the Festival of Booths as prescribed, and offered burnt offerings each day, based on the number specified by ordinance for each festival day.

After [this, they presented] the daily sacrifice of burnt offerings, [the offerings] for the New Moon Festival, and for all of the appointed times consecrated for Yahweh and for all who gave a freewill offering to Yahweh.

They observed the Festival of Unleavened Bread for seven days with joy, because the Lord had made them joyful, having changed the Assyrian king’s attitude toward them, so that he supported them in the work on the house of the God of Israel.