'Appointed Feasts' in the Bible

The roads to Zion are in mourningBecause no one comes to the appointed feasts.All her gates are desolate;Her priests are groaning,Her virgins are grieved and suffering,And she suffers bitterly.

And He has violently broken down His temple like a [fragile] garden hedge;He has destroyed His appointed meeting place.The Lord has caused the appointed feast and SabbathTo be forgotten in ZionAnd has despised and rejected the king and the priestIn the indignation of His anger.