Roman holidays generally were celebrated to worship and celebrate a certain god or mythological occurrence, and consisted of religious observances, various festival traditions and usually a large feast. The most important festivals were the Saturnalia, the Consualia, the Lupercalia and the rites of the Bona Dea. Among the most useful sources for Ancient Roman holidays is Ovid's Fasti, a poem that documents in detail the festivals of January to June at the time of Augustus.
The list below is organized by date. Some of these festivals were instituted in different eras. When possible, the initial date is stated.
January 9 – the first Agonalia, in honor of the god Janus, after whom the month January is named and to whom the Romans prayed for advice.
January 11 and January 15 – Carmentalia
January 24 to January 26 – Sementivae (in the country called Paganalia)
February 13 to 22 – Parentalia, in honour of the ancestors