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
Of course the regents agreed to be pacified; they refused nobody pardon, for there was nobody who was worth the trouble of making him an exception. That we may see how suddenly the tone in aristocratic circles changed after the resolutions of Luca became known, it is worth while to compare the pamphlets given forth by Cicero shortly before with the palinode which he caused to be issued to evince publicly his repentance and his good intentions.(6)
6. This palinode is the still extant oration on the Provinces to be assigned to the consuls of 699. It was delivered in the end of May 698. The pieces contrasting with it are the orations for Sestius and against Vatinius and that upon the opinion of the Etruscan soothsayers, dating from the months of March and April, in which the aristocratic regime is glorified to the best of his ability and Caesar in particular is treated in a very cavalier tone. It was but reasonable that Cicero should, as he himself confesses (Ad Att. iv. 5, 1), be ashamed to transmit even to intimate friends that attestation of his resumed allegiance.
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Reference address : https://www.ellopos.net/elpenor/rome/5-08-pompeius-caesar.asp?pg=31