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
From the most ancient times there were held, in connection with the religious festival on the Mount of Alba, assemblies of the representatives of the several communities at the neighbouring Latin seat of justice at the source of the Ferentina (near Marino). Indeed such a confederacy cannot be conceived to exist without having a certain power of superintendence over the associated body, and without possessing a system of law binding on all. Tradition records, and we may well believe, that the league exercised jurisdiction in reference to violations of federal law, and that it could in such cases pronounce even sentence of death. The later communion of legal rights and, in some sense, of marriage that subsisted among the Latin communities may perhaps be regarded as an integral part of the primitive law of the league, so that any Latin man could beget lawful children with any Latin woman and acquire landed property and carry on trade in any part of Latium.
The league may have also provided a federal tribunal of arbitration for the mutual disputes of the cantons; on the other hand, there is no proof that the league imposed any limitation on the sovereign right of each community to make peace or war. In like manner there can be no doubt that the constitution of the league implied the possibility of its waging defensive or even aggressive war in its own name; in which case, of course, it would be necessary to have a federal commander-in-chief. But we have no reason to suppose that in such an event each community was compelled by law to furnish a contingent for the army, or that, conversely, any one was interdicted from undertaking a war on its own account even against a member of the league. There are, however, indications that during the Latin festival, just as was the case during the festivals of the Greek leagues, "a truce of God" was observed throughout all Latium; (5) and probably on that occasion even tribes at feud granted safe-conducts to each other.
5. The Latin festival is expressly called "armistice" (-indutiae-, Macrob. Sat. i. 16; --ekecheipiai--, Dionys. iv. 49); and a war was not allowed to be begun during its continuance (Macrob. l. c.)
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Reference address : https://www.ellopos.net/elpenor/rome/1-03-settlements-latins.asp?pg=12