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 decision lay in the hands of the middle party; it was that party which after the fall of Gracchus had, in league with his adherents, protected reform against the oligarchy, and it alone was now able in concert with the oligarchy to set a limit to reform. The Latins resorted personally to the most prominent man of this party, Scipio Aemilianus, with a request that he would protect their rights. He promised to do so; and mainly through his influence,(4) in 625, a decree of the people withdrew from the commission its jurisdiction, and remitted the decision respecting what were domanial and what private possessions to the censors and, as proxies for them, the consuls, to whom according to the general principles of law it pertained.
4. To this occasion belongs his oration -contra legem iudiciariam- Ti. Gracchi--which we are to understand as referring not, as has been asserted, to a law as to the -indicia publica-, but to the supplementary law annexed to his agrarian rogation: -ut triumviri iudicarent-, qua publicus ager, qua privatus esset (Liv. Ep. lviii.; see IV. II. Tribunate of Gracchus above).
This was simply a suspension of further domain-distribution under a mild form. The consul Tuditanus, by no means Gracchan in his views and little inclined to occupy himself with the difficult task of agrarian definition, embraced the opportunity of going off to the Illyrian army and leaving the duty entrusted to him unfulfilled. The allotment-commission no doubt continued to subsist, but, as the judicial regulation of the domain-land was at a standstill, it was compelled to remain inactive.
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Reference address : https://www.ellopos.net/elpenor/rome/4-03-revolution-gaius-gracchus.asp?pg=6