Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
A similar still more comprehensive plan of murder was then concerted for the 5th Feb.; but this too was frustrated, because Catilina gave the signal too early, before the bandits who were bespoken had all arrived. Thereupon the secret was divulged. The government did not venture openly to proceed against the conspiracy, but it assigned a guard to the consuls who were primarily threatened, and it opposed to the band of the conspirators a band paid by the government. To remove Piso, the proposal was made that he should be sent as quaestor with praetorian powers to Hither Spain; to which Crassus consented, in the hope of securing through him the resources of that important province for the insurrection. Proposals going farther were prevented by the tribunes.
So runs the account that has come down to us, which evidently gives the version current in the government circles, and the credibility of which in detail must, in the absence of any means of checking it, be left an open question. As to the main matter--the participation of Caesar and Crassus--the testimony of their political opponents certainly cannot be regarded as sufficient evidence of it. But their notorious action at this epoch corresponds with striking exactness to the secret action which this report ascribes to them. The attempt of Crassus, who in this year was censor, officially to enrol the Transpadanes in the burgess-list(9) was of itself directly a revolutionary enterprise.
9. Cf. V. V. Transpadanes
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