ante diem iii idus quinctilias

ludi Apollinares (day 8)-- games instituted in 212 B.C. after consulting the Sybilline books during a particularly bad stretch in the Punic Wars; four years later they became an annual festival in honour of Apollo

431 B.C. (?) -- dedication of the Temple of Apollo outside the pomoerium (and associated rites thereafter)

100 B.C. (?) -- birth of G. Julius Caesar (another possible day)

ca. 251 A.D. -- martydom of Myrope