In this episode, we explore what the "Ides" actually meant in ancient Rome and how March 15th transformed from an ordinary—sometimes even festive—date on the Roman calendar into one of history's most infamous days. Jörg Rüpke explains how Romans understood their calendar, what rituals or superstitions may (or may not) have surrounded the Ides, and how news of Caesar's assassination would have spread through the city. We also examine the differences between ancient historical sources and Shakespeare's dramatic choices, from Calpurnia's ominous warnings to the political and religious tensions surrounding tyrannicide.

We then turn to Shakespeare's England, asking how Renaissance audiences would have interpreted Roman dates, costumes, and political symbolism on stage. Did Elizabethans already fear March 15th, or did Shakespeare himself help create that association? Along the way, we consider how the play reflects the delicate political climate of Elizabeth I's reign, the moral dangers of overthrowing authority, and why the assassination scene unfolds at "the Capitol" instead of the historically accurate Curia of Pompey.