0 in Shakespeare's play "Julius Caesar", a warning given to Caesar about 15 March , the day on which he was assassinated (= killed). It is sometimes used as a warning in other situations:
The way things have worked out for the team this month, they should have heeded the warning - beware the ides of March!
NYA ORD
European
May 10, 2021
DAGENS ORD
Shimmer
beware the ides of March