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
The Samnites and Democrats Attack Rome - Battle at the Colline Gate - Slaughter of the Prisoners
Its leaders then determined to desist from the relief of Praeneste and to throw themselves with all their united strength on Rome, which was only a good day's march distant. By so doing they were, in a military point of view, ruined; their line of retreat, the Latin road, would by such a movement fall into Sulla's hands; and even if they got possession of Rome, they would be infallibly crushed there, enclosed within a city by no means fitted for defence, and wedged in between the far superior armies of Metellus and Sulla.
Safety, however, was no longer thought of; revenge alone dictated this march to Rome, the last outbreak of fury in the passionate revolutionists and especially in the despairing Sabellian nation. Pontius of Telesia was in earnest, when he called out to his followers that, in order to get rid of the wolves which had robbed Italy of freedom, the forest in which they harboured must be destroyed. Never was Rome in a more fearful peril than on the 1st November 672, when Pontius, Lamponius, Carrinas, Damasippus advanced along the Latin road towards Rome, and encamped about a mile from the Colline gate.
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Reference address : https://www.ellopos.net/elpenor/rome/4-09-cinna-sulla.asp?pg=48