Banquet in honour of Jupiter (also included were Juno and Minerva: Val. Max. 2,1,2) on the Ides of November during the Ludi plebeii, both events hosted by the plebeian aediles (see esp. Liv. 30,39,8). Imperial calendars [1] attest a Iovis epulum for the Ludi Romani on the Ides of September.
At this festival, the senators assembled on the Capitol for a banquet. This bonding ritual (Gell. NA 12,8,2) could not be carried out in case of extreme conflict (Cass. Dio 39,30,4). It is comparable to the Daps banquet for Jupiter celebrated domestically prior to sowing mill…