Alma 51:1

And now it came to pass, in the commencement of the twenty and fifth year of the reign of the Judges over the people of Nephi, they having established peace between the people of Lehi and the people of Morianton concerning their lands, and having commenced the twenty and fifth year in peace;

At the start of the 25th year of the judges over the people of Nephi, they made peace between the people of Lehi and the people of Morianton about their land. The 25th year started with peace.

At the start of the twenty-fifth year of the judges’ rule, the Nephites had just settled the land dispute between Lehi’s people and Morianton’s people, and the new year began peacefully.