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
But Catilina could not venture to place his abler partisans, such as the young senator Gaius Cethegus and the equites Lucius Statilius and Publius Gabinius Capito, at the head of the movement; for even among the conspirators the traditional hierarchy of rank held its ground, and the very anarchists thought that they should be unable to carry the day unless a consular or at least a praetorian were at their head. Therefore, however urgently the army of the insurrection might long for its general, and however perilous it was for the latter to remain longer at the seat of government after the outbreak of the revolt, Catilina nevertheless resolved still to remain for a time in Rome.
Accustomed to impose on his cowardly opponents by his audacious insolence, he showed himself publicly in the Forum and in the senate-house and replied to the threats which were there addressed to him, that they should beware of pushing him to extremities; that, if they should set the house on fire, he would be compelled to extinguish the conflagration in ruins. In reality neither private persons nor officials ventured to lay hands on the dangerous man; it was almost a matter of indifference when a young nobleman brought him to trial on account of violence, for long before the process could come to an end, the question could not but be decided elsewhere.
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Reference address : https://www.ellopos.net/elpenor/rome/5-05-parties-pompeius.asp?pg=32