November – Caesar leaves for Farther Spain to deal with a fresh outbreak of resistance.
The Julian calendar is enacted, so in this year there were 445 days to compensate for past errors.
April 20 – Cicero, in Rome, writes to Varro "If our voices are no longer heard in the Senate and in the Forum, let us follow the example of the ancient sages and serve our country through our writings, concentrating on questions of ethics and constitutional law."