'Appointed Feasts' in the Bible

Look, I am building a house for the name of Yahweh my God to dedicate to him, to offer sweet spices of incense before him, and [for] the regular rows [of bread], and burnt offerings for mornings, evenings, Sabbaths, and new moon festivals, and for appointed feasts of Yahweh our God which [are] everlasting for Israel.

even according to the duty of each a day upon its own day, offering up according to the commandment of Moses, for the sabbaths, and for the new moons, and for the appointed feasts, three times in the year, - in the festival of unleavened cakes and in the festival of weeks, and in the festival of booths;

Hezekiah also appointed the king’s [personal] portion of his goods: for the morning and evening burnt offerings, and the burnt offerings for the Sabbaths and for the New Moons and for the appointed feasts, as it is written in the Law of the Lord.