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Ancient Roman festivals
| Date | Date | Day of week | Event |
|---|---|---|---|
| 1/1/21 | 1 Ianuarius, 2021 | Friday | Aesculapius |
| 1/1/21 | 1 Ianuarius, 2021 | Friday | Vediovis |
| 1/29/21 - 1/30/21 | 3 Ianuarius, 2021 | Friday - Saturday | Compitalia |
| 1/5/21 | 5 Ianuarius, 2021 | Tuesday | Dies natalis of the shrine of Vica Pota |
| 1/7/21 | 7 Ianuarius, 2021 | Thursday | Circenses for Father Janus |
| 1/7/21 | 7 Ianuarius, 2021 | Thursday | Supplication for Jupiter Sempiternus |
| 1/9/21 | 9 Ianuarius, 2021 | Saturday | Agonalia |
| 1/11/21 | 11 Ianuarius, 2021 | Monday | Carmentalia |
| 1/11/21 | 11 Ianuarius, 2021 | Monday | Dies natalis of the cult of Juturna |
| 1/13/21 | 13 Ianuarius, 2021 | Wednesday | Ludi circenses for Jupiter Stator |
| 1/13/21 | 13 Ianuarius, 2021 | Wednesday | Feriae Iovis |
| 1/15/21 | 15 Ianuarius, 2021 | Friday | Carmentalia |
| 1/16/21 | 16 Ianuarius, 2021 | Saturday | Supplication for Augustus |
| 1/24/21 | 24 Ianuarius, 2021 | Sunday | Dies natalis of the emperor Hadrian |
| 2/19/21 - 2/20/21 | 24 Ianuarius, 2021 | Friday - Saturday | Sementivae |
| 1/27/21 | 27 Ianuarius, 2021 | Wednesday | Dies natalis of the temple of Castor and Pollux |
| 1/27/21 | 27 Ianuarius, 2021 | Wednesday | Ludi Castores |
| 2/1/21 | 1 Februarius, 2021 | Monday | Sacra at the Grove of Alernus |
| 2/1/21 | 1 Februarius, 2021 | Monday | Dies natalis of the temple of Juno Sospita |
| 2/1/21 | 1 Februarius, 2021 | Monday | Circenses for Hercules |
| 2/5/21 | 5 Februarius, 2021 | Friday | Dies natalis of the temple of Concordia |
| 3/9/21 | 11 Februarius, 2021 | Tuesday | Ludi Genialici |
| 2/13/21 | 13 Februarius, 2021 | Saturday | Dies natalis of temple of Faunus |
| 2/13/21 | 13 Februarius, 2021 | Saturday | Feriae Iovis |
| 3/11/21 - 3/18/21 | 13 Februarius, 2021 | Thursday - Thursday | Parentalia |
| 2/15/21 | 15 Februarius, 2021 | Monday | Lupercalia |
| 2/17/21 | 17 Februarius, 2021 | Wednesday | Quirinalia |
| 3/16/21 - 3/23/21 | 18 Februarius, 2021 | Tuesday - Tuesday | Fornacalia |
| 2/21/21 | 21 Februarius, 2021 | Sunday | Feralia |
| 2/22/21 | 22 Februarius, 2021 | Monday | Caristia |
| 2/23/21 | 23 Februarius, 2021 | Tuesday | Terminalia |
| 2/24/21 | 24 Februarius, 2021 | Wednesday | Regifugium |
| 2/25/21 | 25 Februarius, 2021 | Thursday | Lorio |
| 2/27/21 | 27 Februarius, 2021 | Saturday | Equirria |
| 3/1/21 | 1 Martius, 2021 | Monday | Matronalia |
| 3/1/21 | 1 Martius, 2021 | Monday | Salii |
| 3/1/21 | 1 Martius, 2021 | Monday | Renewal of the sacred fire of Vesta |
| 3/1/21 | 1 Martius, 2021 | Monday | Circenses |
| 3/1/21 | 1 Martius, 2021 | Monday | Feriae Marti |
| 3/1/21 | 1 Martius, 2021 | Monday | Dies natalis of the temple of Juno Lucina |
| 3/1/21 | 1 Martius, 2021 | Monday | Dies natalis of Mars |
| 3/1/21 | 1 Martius, 2021 | Monday | Dies natalis of Father Mars Victor |
| 3/5/21 | 5 Martius, 2021 | Friday | Isidis Navigium |
| 3/6/21 | 6 Martius, 2021 | Saturday | Dies imperii |
| 3/6/21 | 6 Martius, 2021 | Saturday | Penates of the citizens of Rome |
| 3/6/21 | 6 Martius, 2021 | Saturday | Supplication to Vesta and the "public gods" |
| 3/7/21 | 7 Martius, 2021 | Sunday | Dies natalis of the temple of Vediovis |
| 3/7/21 | 7 Martius, 2021 | Sunday | Iunonalia |
| 3/9/21 | 9 Martius, 2021 | Tuesday | Salii |
| 3/13/21 | 13 Martius, 2021 | Saturday | Circenses for Jupiter Cultor |
| 3/14/21 | 14 Martius, 2021 | Sunday | Equirria |
| 3/14/21 | 14 Martius, 2021 | Sunday | Mamuralia |
| 3/15/21 | 15 Martius, 2021 | Monday | Feriae Iovis |
| 3/15/21 | 15 Martius, 2021 | Monday | Anna Perenna |
| 4/11/21 | 16 Martius, 2021 | Sunday | Argei |
| 3/17/21 | 17 Martius, 2021 | Wednesday | Agonia |
| 3/17/21 | 17 Martius, 2021 | Wednesday | Circenses and Ludi Liberalici |
| 3/17/21 | 17 Martius, 2021 | Wednesday | Liberalia |
| 3/19/21 | 19 Martius, 2021 | Friday | Quinquatrus for Mars and Minerva |
| 3/20/21 | 20 Martius, 2021 | Saturday | Pelusia |
| 3/22/21 | 22 Martius, 2021 | Monday | Arbor intrat |
| 3/23/21 | 23 Martius, 2021 | Tuesday | Salii |
| 3/23/21 | 23 Martius, 2021 | Tuesday | Tubilustrium |
| 3/24/21 | 24 Martius, 2021 | Wednesday | Dies Sanguinis |
| 3/25/21 | 25 Martius, 2021 | Thursday | Hilaria |
| 3/26/21 | 26 Martius, 2021 | Friday | Requetio |
| 3/27/21 | 27 Martius, 2021 | Saturday | Lavatio |
| 3/28/21 | 28 Martius, 2021 | Sunday | Initium Gaiani |
| 3/31/21 | 31 Martius, 2021 | Wednesday | Dies natalis of the temple of the Moon |
| 4/1/21 | 1 Aprilis, 2021 | Thursday | Veneralia |
| 4/3/21 | 3 Aprilis, 2021 | Saturday | Dies natalis of the temple of Quirinus |
| 4/30/21 - 5/5/21 | 4 Aprilis, 2021 | Friday - Wednesday | Ludi Megalenses |
| 4/5/21 | 5 Aprilis, 2021 | Monday | Dies natalis of the temple of Fortuna Publica |
| 4/8/21 | 8 Aprilis, 2021 | Thursday | Dies natalis of the temple of Castor and Pollux |
| 4/10/21 | 10 Aprilis, 2021 | Saturday | Dies natalis of the temple of the Great Idaean Mother |
| 4/11/21 | 11 Aprilis, 2021 | Sunday | Dies natalis of the deified Septimius Severus |
| 4/12/21 | 12 Aprilis, 2021 | Monday | Ludi Cereri |
| 4/13/21 | 13 Aprilis, 2021 | Tuesday | Dies natalis of the temple to Jove the Liberator |
| 4/13/21 | 13 Aprilis, 2021 | Tuesday | Dies natalis of the temple to Jupiter Victor |
| 4/13/21 | 13 Aprilis, 2021 | Tuesday | Feriae Iovis |
| 4/14/21 | 14 Aprilis, 2021 | Wednesday | Supplication to Victoria Augusta |
| 4/15/21 | 15 Aprilis, 2021 | Thursday | Fordicidia |
| 4/16/21 | 16 Aprilis, 2021 | Friday | Supplication to Felicitas Imperii |
| 4/19/21 | 19 Aprilis, 2021 | Monday | Cerealia |
| 4/21/21 | 21 Aprilis, 2021 | Wednesday | Roma condita |
| 4/21/21 | 21 Aprilis, 2021 | Wednesday | Parilia |
| 4/23/21 | 23 Aprilis, 2021 | Friday | Vinalia urbana |
| 4/25/21 | 25 Aprilis, 2021 | Sunday | Robigalia |
| 4/25/21 | 25 Aprilis, 2021 | Sunday | Serapia |
| 4/26/21 | 26 Aprilis, 2021 | Monday | Dies natalis of Marcus Aurelius |
| 5/24/21 - 5/28/21 | 28 Aprilis, 2021 | Monday - Friday | Ludi Florae |
| 5/1/21 | 1 Maius, 2021 | Saturday | Dies natalis of the temple of Bona Dea |
| 5/1/21 | 1 Maius, 2021 | Saturday | Sacrifice to the Lares Praestites |
| 5/9/21 | 9 Maius, 2021 | Sunday | Lemuria |
| 5/10/21 | 10 Maius, 2021 | Monday | Dies natalis of Claudius Gothicus |
| 5/11/21 | 11 Maius, 2021 | Tuesday | Lemuria |
| 5/11/21 | 11 Maius, 2021 | Tuesday | Sacrifice to Mania |
| 5/13/21 | 13 Maius, 2021 | Thursday | Lemuria |
| 6/9/21 | 14 Maius, 2021 | Wednesday | Argei |
| 5/14/21 | 14 Maius, 2021 | Friday | Dies natalis of the temple of Mars Invictus |
| 5/15/21 | 15 Maius, 2021 | Saturday | Sacrifice to Mercury |
| 5/15/21 | 15 Maius, 2021 | Saturday | Sacrifice to Maia |
| 5/15/21 | 15 Maius, 2021 | Saturday | Merchants' festival |
| 5/15/21 | 15 Maius, 2021 | Saturday | Feriae Iovis |
| 5/19/21 | 19 Maius, 2021 | Wednesday | Zenziarius |
| 5/21/21 | 21 Maius, 2021 | Friday | Agonalia |
| 5/23/21 | 23 Maius, 2021 | Sunday | Feriae Volcano |
| 5/23/21 | 23 Maius, 2021 | Sunday | Macellus rosam sumat |
| 5/23/21 | 23 Maius, 2021 | Sunday | Tubilustrium |
| 5/24/21 | 24 Maius, 2021 | Monday | Supplication to Vesta |
| 5/25/21 | 25 Maius, 2021 | Tuesday | Dies natalis of the temple Fortuna Primigenia |
| 5/29/21 | 29 Maius, 2021 | Saturday | Ambarvalia |
| 5/29/21 | 29 Maius, 2021 | Saturday | Dies natalis of Honos |
| 5/29/21 | 29 Maius, 2021 | Saturday | Dies natalis of Virtus |
| 6/24/21 - 6/26/21 | 29 Maius, 2021 | Thursday - Saturday | Ludi Fabaraci |
| 5/29/21 | 29 Maius, 2021 | Saturday | Zinza |
| 5/31/21 | 31 Maius, 2021 | Monday | Rosalia signorum |
| 6/1/21 | 1 Iunius, 2021 | Tuesday | Dies natalis of the temple ple of Mars |
| 6/1/21 | 1 Iunius, 2021 | Tuesday | Dies natalis of the temple of the Tempestates |
| 6/1/21 | 1 Iunius, 2021 | Tuesday | Dies natalis of the temple of Juno Moneta |
| 6/1/21 | 1 Iunius, 2021 | Tuesday | Cardea |
| 6/3/21 | 3 Iunius, 2021 | Thursday | Die natalis of the Temple of Bellona |
| 6/4/21 | 4 Iunius, 2021 | Friday | Dies natalis of the temple of Hercules Magnus Custos |
| 6/5/21 | 5 Iunius, 2021 | Saturday | Dies natalis of the temple of Dius Fidius |
| 6/6/21 | 6 Iunius, 2021 | Sunday | Colossus coronatur |
| 6/7/21 | 7 Iunius, 2021 | Monday | Ludi Piscatorii |
| 6/7/21 | 7 Iunius, 2021 | Monday | Vesta aperitur |
| 6/8/21 | 8 Iunius, 2021 | Tuesday | Dies natalis of the temple of Mens |
| 6/9/21 | 9 Iunius, 2021 | Wednesday | Vestalia |
| 6/11/21 | 11 Iunius, 2021 | Friday | Dies natalis of the temple of Fortuna |
| 6/11/21 | 11 Iunius, 2021 | Friday | Matralia |
| 6/13/21 | 13 Iunius, 2021 | Sunday | Feriae Iovis |
| 6/13/21 | 13 Iunius, 2021 | Sunday | Lesser Quinquatrus |
| 6/15/21 | 15 Iunius, 2021 | Tuesday | Vesta clauditur |
| 6/19/21 | 19 Iunius, 2021 | Saturday | Dies natalis of the temple of Minerva |
| 6/20/21 | 20 Iunius, 2021 | Sunday | Dies natalis of the temple of Summanus |
| 6/24/21 | 24 Iunius, 2021 | Thursday | Dies natalis of the temple of Fors Fortuna |
| 6/24/21 | 24 Iunius, 2021 | Thursday | Dies lampadarum |
| 6/27/21 | 27 Iunius, 2021 | Sunday | Dies natalis of temple of Jupiter Stator |
| 6/27/21 | 27 Iunius, 2021 | Sunday | Dies natalis of temple of the Lares |
| 7/1/21 | 1 Quintilis, 2021 | Thursday | Dies natalis of temple of Felicitas |
| 7/5/21 | 5 Quintilis, 2021 | Monday | Poplifugia |
| 7/6/21 | 6 Quintilis, 2021 | Tuesday | Dies natalis of the temple of Fortuna Muliebris |
| 8/1/21 - 8/7/21 | 6 Quintilis, 2021 | Sunday - Saturday | Ludi Apollinares |
| 7/7/21 | 7 Quintilis, 2021 | Wednesday | Ancillarum feriae |
| 7/7/21 | 7 Quintilis, 2021 | Wednesday | Caprotinia |
| 7/7/21 | 7 Quintilis, 2021 | Wednesday | Dies natalis of the temple of the Two Pales |
| 7/8/21 | 8 Quintilis, 2021 | Thursday | Vitulatio |
| 8/9/21 - 8/13/21 | 14 Quintilis, 2021 | Monday - Friday | Mercatus Apollinares |
| 7/15/21 | 15 Quintilis, 2021 | Thursday | Equitum Romanorum probatio or transvectio |
| 7/15/21 | 15 Quintilis, 2021 | Thursday | Feriae Iovis |
| 7/17/21 | 17 Quintilis, 2021 | Saturday | Sacrifices to Honos |
| 7/17/21 | 17 Quintilis, 2021 | Saturday | Sacrifices to Victoria |
| 7/18/21 | 18 Quintilis, 2021 | Sunday | Dies Alliensis |
| 7/19/21 | 19 Quintilis, 2021 | Monday | Lucaria |
| 8/15/21 - 8/24/21 | 20 Quintilis, 2021 | Sunday - Tuesday | Ludi Victoriae Caesaris |
| 7/21/21 | 21 Quintilis, 2021 | Wednesday | Lucaria |
| 7/22/21 | 22 Quintilis, 2021 | Thursday | Dies natalis of the temple of Concordia |
| 7/23/21 | 23 Quintilis, 2021 | Friday | Neptunalia |
| 7/25/21 | 25 Quintilis, 2021 | Sunday | Furrinalia |
| 7/30/21 | 30 Quintilis, 2021 | Friday | Dies natalis of the temple of Fortuna Huiusce Diei |
| 8/1/21 | 1 Sextilis, 2021 | Sunday | Dies natalis and circus games in honor of the divinized emperor Pertinax |
| 8/1/21 | 1 Sextilis, 2021 | Sunday | Dies natalis of the temple of Spes |
| 8/1/21 | 1 Sextilis, 2021 | Sunday | Dies natalis of the Two Victories on the Palatine |
| 8/3/21 | 3 Sextilis, 2021 | Tuesday | Supplicia canum |
| 8/4/21 | 4 Sextilis, 2021 | Wednesday | Circenses for the Victory of the Senate |
| 8/5/21 | 5 Sextilis, 2021 | Thursday | Dies natalis of the temple of Salus |
| 8/7/21 | 7 Sextilis, 2021 | Saturday | Dies natalis and circenses for Constantius |
| 8/8/21 | 8 Sextilis, 2021 | Sunday | Ludi votivi |
| 8/9/21 | 9 Sextilis, 2021 | Monday | Public sacrifice for Sol Indiges |
| 8/12/21 | 12 Sextilis, 2021 | Thursday | Lychnapsia |
| 8/12/21 | 12 Sextilis, 2021 | Thursday | Festival for Hercules Invictus near the Circus Maximus |
| 8/12/21 | 12 Sextilis, 2021 | Thursday | Dies natalis of the temple of Venus Victrix |
| 8/13/21 | 13 Sextilis, 2021 | Friday | Dies natalis of the Camenae |
| 8/13/21 | 13 Sextilis, 2021 | Friday | Dies natalis of the temple of Flora |
| 8/13/21 | 13 Sextilis, 2021 | Friday | Dies natalis of the temple of Fortuna Equestris |
| 8/13/21 | 13 Sextilis, 2021 | Friday | Dies natalis of the temple of Hercules Victor |
| 8/13/21 | 13 Sextilis, 2021 | Friday | Feriae Iovis |
| 8/13/21 | 13 Sextilis, 2021 | Friday | Festival for Diana |
| 8/13/21 | 13 Sextilis, 2021 | Friday | Festival for Vortumnus |
| 8/17/21 | 17 Sextilis, 2021 | Tuesday | Dies natalis of the temple of Janus |
| 8/17/21 | 17 Sextilis, 2021 | Tuesday | Portunalia |
| 8/17/21 | 17 Sextilis, 2021 | Tuesday | Tiberinalia |
| 8/19/21 | 19 Sextilis, 2021 | Thursday | Dies natalis and circenses for Probus |
| 8/19/21 | 19 Sextilis, 2021 | Thursday | Vinalia rustica |
| 8/21/21 | 21 Sextilis, 2021 | Saturday | Consualia |
| 8/23/21 | 23 Sextilis, 2021 | Monday | Volcanalia |
| 8/23/21 | 23 Sextilis, 2021 | Monday | Sacrifice to the Nymphs |
| 8/23/21 | 23 Sextilis, 2021 | Monday | Sacrifice to Maia in the precinct of Vulcan |
| 8/23/21 | 23 Sextilis, 2021 | Monday | Dies natalis of the temple of the Hora of Quirinus |
| 8/23/21 | 23 Sextilis, 2021 | Monday | Dies natalis of temple of Ops Opifera |
| 8/24/21 | 24 Sextilis, 2021 | Tuesday | Mundus patet |
| 8/24/21 | 24 Sextilis, 2021 | Tuesday | Sacrifices for Luna at the Graecostasis |
| 8/25/21 | 25 Sextilis, 2021 | Wednesday | Opiconsivia |
| 8/28/21 | 28 Sextilis, 2021 | Saturday | Dies natalis of the temple of Sol and Luna |
| 9/1/21 | 1 September, 2021 | Wednesday | Dies natalis of the temple of Jove the Free |
| 9/1/21 | 1 September, 2021 | Wednesday | Dies natalis of the temple of Juno Regina |
| 9/1/21 | 1 September, 2021 | Wednesday | Dies natalis of the temple of Jupiter the Thunderer |
| 9/5/21 | 5 September, 2021 | Sunday | Dies natalis of one of the two temples of Jupiter Stator |
| 10/1/21 - 10/14/21 | 5 September, 2021 | Friday - Thursday | Ludi Romani |
| 9/5/21 | 5 September, 2021 | Sunday | Mammes vindemia |
| 9/9/21 | 9 September, 2021 | Thursday | Dies natalis of Aurelian |
| 9/11/21 | 11 September, 2021 | Saturday | Dies natalis of temple of Asclepius |
| 9/13/21 | 13 September, 2021 | Monday | Feriae Iovis |
| 9/13/21 | 13 September, 2021 | Monday | Sacrifice of ovis idulis for Jupiter Optimus Maximus |
| 9/13/21 | 13 September, 2021 | Monday | Epulum Jovis |
| 9/13/21 | 13 September, 2021 | Monday | Clavis annalis |
| 9/14/21 | 14 September, 2021 | Tuesday | Accession of Domitian |
| 9/14/21 | 14 September, 2021 | Tuesday | Probatio equorum |
| 9/18/21 | 18 September, 2021 | Saturday | Dies imperii of Nerva |
| 9/18/21 | 18 September, 2021 | Saturday | Dies natalis of Trajan |
| 10/14/21 - 10/17/21 | 18 September, 2021 | Thursday - Sunday | Ludi Triumphales |
| 9/19/21 | 19 September, 2021 | Sunday | Dies natalis of Antoninus Pius |
| 10/16/21 - 10/18/21 | 20 September, 2021 | Saturday - Monday | Mercatus Romani |
| 9/23/21 | 23 September, 2021 | Thursday | Dies natalis of Divus Augustus |
| 9/23/21 | 23 September, 2021 | Thursday | Dies natalis of the temple of Apollo and Latona |
| 9/26/21 | 26 September, 2021 | Sunday | Dies natalis of the temple of Venus Genetrix |
| 9/27/21 | 27 September, 2021 | Monday | Profectio Divi |
| 10/25/21 - 10/26/21 | 29 September, 2021 | Monday - Tuesday | Ludi Fatales |
| 10/1/21 | 1 October, 2021 | Friday | Dies natalis of Alexander Severus |
| 10/1/21 | 1 October, 2021 | Friday | Dies natalis of the temple of Fides |
| 10/1/21 | 1 October, 2021 | Friday | Tigillum Sororium |
| 10/4/21 | 4 October, 2021 | Monday | Ieiunium Cereris |
| 10/5/21 | 5 October, 2021 | Tuesday | Mundus patet |
| 10/7/21 | 7 October, 2021 | Thursday | Dies natalis of Juno Curitis |
| 10/7/21 | 7 October, 2021 | Thursday | Dies natalis of Jupiter Fulgur |
| 10/7/21 | 7 October, 2021 | Thursday | Supplication to Vesta for the birthday of Drusus Caesar |
| 10/9/21 | 9 October, 2021 | Saturday | Dies natales of temple of Fausta Felicitas |
| 10/9/21 | 9 October, 2021 | Saturday | Dies natales of temple of Genius Publicus |
| 10/9/21 | 9 October, 2021 | Saturday | Dies natales of temple of Venus Victrix |
| 10/10/21 | 10 October, 2021 | Sunday | Dies natalis of the restoration of the Temple of Juno Moneta |
| 10/11/21 | 11 October, 2021 | Monday | Meditrinalia |
| 10/13/21 | 13 October, 2021 | Wednesday | Fontinalia |
| 10/14/21 | 14 October, 2021 | Thursday | Dies natalis of temple of the Penates |
| 10/14/21 | 14 October, 2021 | Thursday | Probatio equorum |
| 10/15/21 | 15 October, 2021 | Friday | Feriae Iovis |
| 10/15/21 | 15 October, 2021 | Friday | Ludi Capitolini |
| 10/15/21 | 15 October, 2021 | Friday | October Horse |
| 10/18/21 | 18 October, 2021 | Monday | Supplication to Spes and Iuventas |
| 11/14/21 - 11/16/21 | 19 October, 2021 | Sunday - Tuesday | Ludi Solis |
| 10/19/21 | 19 October, 2021 | Tuesday | Armilustrium |
| 11/21/21 - 11/26/21 | 26 October, 2021 | Sunday - Friday | Ludi Victoriae Sullanae |
| 11/23/21 - 11/28/21 | 28 October, 2021 | Tuesday - Sunday | Isia |
| 11/30/21 - 12/12/21 | 4 November, 2021 | Tuesday - Sunday | Plebeian Games |
| 11/8/21 | 8 November, 2021 | Monday | Dies natalis of Nerva |
| 11/8/21 | 8 November, 2021 | Monday | Mundus patet |
| 11/13/21 | 13 November, 2021 | Saturday | Feriae Iovis |
| 11/13/21 | 13 November, 2021 | Saturday | Epulum Iovi |
| 11/13/21 | 13 November, 2021 | Saturday | Dies natalis of the temple of Fortuna Primigenia |
| 11/13/21 | 13 November, 2021 | Saturday | Dies natalis of the temple of Feronia |
| 11/14/21 | 14 November, 2021 | Sunday | Probatio equorum |
| 11/16/21 | 16 November, 2021 | Tuesday | Dies natalis of Tiberius |
| 11/16/21 | 16 November, 2021 | Tuesday | Supplication to Vesta on the Feriale Cumanum |
| 11/17/21 | 17 November, 2021 | Wednesday | Dies natalis of Vespasian |
| 11/18/21 | 18 November, 2021 | Thursday | Dies natalis of a cult to Deus Sanctus Sol |
| 12/14/21 - 12/15/21 | 18 November, 2021 | Tuesday - Wednesday | Mercatus Plebeii |
| 11/24/21 | 24 November, 2021 | Wednesday | Bruma |
| 12/3/21 | 3 December, 2021 | Friday | Bona Dea |
| 12/5/21 | 5 December, 2021 | Sunday | Festival for Faunus |
| 12/8/21 | 8 December, 2021 | Wednesday | Festival for Tiberinus Pater and Gaia |
| 12/11/21 | 11 December, 2021 | Saturday | Agonalia |
| 12/11/21 | 11 December, 2021 | Saturday | Agonalia for Indiges |
| 12/11/21 | 11 December, 2021 | Saturday | Septimontium |
| 12/12/21 | 12 December, 2021 | Sunday | Ceremonies at the Temple of Consus on the Aventine |
| 12/13/21 | 13 December, 2021 | Monday | Lectisternium for Ceres |
| 12/13/21 | 13 December, 2021 | Monday | Feriae Iovis |
| 12/13/21 | 13 December, 2021 | Monday | Dies natalis of temple of Tellus |
| 12/15/21 | 15 December, 2021 | Wednesday | Consualia |
| 1/12/22 - 1/17/22 | 17 December, 2021 | Wednesday - Monday | Saturnalia |
| 12/18/21 | 18 December, 2021 | Saturday | Eponalia |
| 12/19/21 | 19 December, 2021 | Sunday | Opalia |
| 12/21/21 | 21 December, 2021 | Tuesday | Divalia |
| 12/22/21 | 22 December, 2021 | Wednesday | Dies natalis of the temple of the Lares Permarini |
| 12/23/21 | 23 December, 2021 | Thursday | Larentalia |
| 12/25/21 | 25 December, 2021 | Saturday | Dies Natalis Solis Invicti |
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