Ides of March- March 15

According to Plutarch,a seer had warned that harm would come to Julius Caesar no later than the Ides of March. On his way to the Theatre of Pompey, where he would be assassinated, Caesar passed the seer and joked, "The ides of March have come," meaning to say that the prophecy had not been fulfilled, to which the seer replied "Aye, Caesar; but not gone."[14] This meeting is famously dramatised in William Shakespeare's play Julius Caesar, when Caesar is warned by the soothsayer to "beware the Ides of March." (Source: Wikipedia)