The month of April, 44BC, as a range.

Drusila knows that Longus killed Caesar in the forum. She keys it on all three, for efficiency of retrieval.

Falco knows that Caesar has been killed, but doesn’t know by whom or when.

Gaius knows that Brutus killed Caesar, but believes it happened in April.

16th March, 44BC

Mark Antony knows that Brutus is honourable.

The month of March, 44BC, as a range.