What is considered a Roman holiday?

The Romans were Pagans who celebrated many holidays and festivals. These included Compitalia, a moveable feast, Agonalia, a festival to Janus, God of gates and doorways. Carmentalia, festival to the goddess of childbirth, Carmentis, Ides, a festival to Jupiter, Parentalia, a day of remembrance of the dead and Saturnalia, the celebration of the winter solstice.