Festivals of Rome

Agonalia - January 9. Honors Janus, whom the Romans invoked before undertaking any affair of importance. Also on May 21 and December 11.
Carmentalia - January 11-15 [or 11th and 15th?].
Paganalia - January 24-26.
Feralia - Occurred in January.
Faunalia - February 13.
Fornicalia - February. A corn festival in honor of Fornax.
Parentalia - February 13-21. During this festival the Romans honoured their ancestors at the family shrines within their own homes, thus, all other temples remained closed and weddings were forbidden.
Lupercalia - February 15. This feast celebrated the founding of Rome, and was held in honour of the god Pan. The festival began with the sacrifice of two goats and a dog, then the bloody knife was touched to the foreheads of two youths of illustrious descent who must smile as they are touched, and afterwards, the blood was wiped from their faces with wool dipped in milk. Following this, the victims were skinned and their hides cut into thongs out of which were fashioned a pair of whips. The youths then ran naked around the Palatine Hill and the city, whipping all they came across. The festival derives its name from the Greek name for Pan, Lyceus, from ????s, 'a wolf'. The Lupercal, where the festival was celebrated, lay at the foot of the Aventine Hill, and was where the she-wolf was reputed to have reared Romulus and Remus, the twin founders of Rome.
Quirinalia - February 17.
Feast of Fools - February 17. A celebration for people who had not participated with their curia in the Fornacalia.
Feralia - February 18.
Terminalia - February 23. This festival marked the end of the ancient Roman year
Regifugium - February 24.
Equiria - February 27.
Matronalia - March 1. A festival held at Rome in honour of Mars, in commemoration of the rape of the Sabine women. Only married women could attend the celebrations, during which they made offerings of flowers in the temples of Juno.
Equiria - March 14.
Ides of March - March 15. It was on the Ides of March that Julius Caesar was assasinated.
Anna Perenna - March 15. Roman families traditionally picknicked along the banks of the Tiber.
Liberalia - March 17. Also known as Agonalia.
Quinquatrus - March 19-21.
Tubilustrium - March 23.
Ludi Magalesia - April 4-10. Games in honour of Cybele, whose sanctuary on the Palatine Hill was dedicated in 191BC.
Fordicidia - April 15. Honored Tellus, Goddess of Earth, and was observed by slaughtering pregnant cows, taking the unborn calves from the womb, and burning theim inorder to insure fertility for the growing corn.
Quinquatria - 18 - 22 April. This popular festival was held in honour of the goddess Minerva at Rome. The celebrations lasted for five days, and is the basis for the name of the festival. On the first day, sacrifices and oblations were offered, though no blood was spilled, the next three days were taken up mostly with gladiatorial displays, and on the fifth and final day a solemn procession was held through the streets of the city. The scholars and pedagogues were also given a holiday at this time, and it was customary for them to offer up sacrifices to Minerva, who was their patron goddess. The school-masters would also receive gifts from their pupils when they resumed lessons at the end of the holiday; all of these gifts would be accepted in the name of Minerval. Throughout the festival plays would be enacted and public discussion of the arts openly encouraged. The festival was also associated with the opening of the campaign season; during this time the arms, horses and trumpets of the Army would be ceremoniously purified at Rome. The ancient 'Dance of the Salii' took place during the Quinquatria on 19 Apr, and also during the Armilustrium on 19 Oct.
Cerealia - April 19. Celebrates the beginning of the six vegetative months.
Parilia - April 21. Honored the pastoral goddes Pales, and was observed by driving sheep through burning straw. Also called Palilia.
Vinalia - April 23. A festival celebrated by sampling new wine.
Robigalia - April 25. An ancient religious festival, on which day foot races were held in Rome.
Floria - April 28 to May 3. The festival of Flora, the goddess of flowers, during which the Roman wore fresh garlands of flowers about their necks, and danced through the streets. Instituted after 173BC.
Lemuria - May 9-13.
Ludi Martiales - May 12. Games held in connection with the dedication of the shrine and temple of Mars Ultor; also held on 1 Aug.
Ludi Merceruy - May 15. The birthday of Mercury, who could travel with the speed of thought.
Ambarvalia - May 29.
The Vestalia - June 9. Honors Vesta, the virgin sister of Zeus, and goddess of hearth and home. In Rome, a perpetual fire that was dedicated to her was tended by six virgin priestesses, or "vestal virgins".
Matralia - June 11.
Quinquatrus Minusculoe - June 13.
Ludi Apollinares - July 5. Celebrated with games in honor of Apollo.
Ludi Victoriae Caesaris - 20 - 30 July. Games held in celebration of Caesar's conquests.
Neptunalia - July 23.
Nemoralia - August 13. In honor of Diana the moon goddess, during which slaves were given a holiday.
Portunalia - August 17.
Vinalia Rustica - August 19.
Ludi Consualia - August 21. Honored Consus, the god of counsel and secret plans, and was celebrated with horse and chariot races.
Volcanalia - August 23.
Ludi Magni - Ludi Magni begins sep 4th in honor of Jupiter, Juno, and Minerva
Romani - September 5-19.
Meditrinalia - October 11. Celebrated when a liberation of new wine was made in honor of Meditrina.
Faunalia - October 13.
Equiria - October 15. Celebrated when the "equus October" was sacrificed to Mars in the Campus Martius.
Armilustrium - October 19. The 'Dance of the Salii' took place on this festival and also during the Quinquatria on 19 Apr.
Ludi Victoriae Sullanae - 26 October - 1 November. Games instituted by the dictator Sulla in celebration of his victories, and dedicated in his honour for up to 200 years after his death in ?BC.
Ludi Plebii - November 4-17. The 'Games of the Common People' were instituted sometime between 220 and 216BC
Epulum Jovis - November 13.
Faunalia - December 5.
Larentalia - occurred in December.
Agonia - December 11. Observed by sacrificing victims on the seven hills of Rome.
Saturnalia - December 17-23. The most important festival of the year was held in honour of Saturn, the god of agriculture. During the main feast day of this festival, the masters of every household in Rome waited upon their domestic slaves.
Opalia - December 19. Honored Ops, the goddess of plenty and fertility.