en_tn/2ki/25/01.md

in the ninth year

(See: rc://en/ta/man/translate/translate-ordinal)

in the tenth month, and on the tenth day of the month

This is the tenth month of the Hebrew calendar. The tenth day is near the end of December on Western calendars. This is during the cold season when there may be rain and snow. (See: rc://en/ta/man/translate/translate-ordinal and rc://en/ta/man/translate/translate-hebrewmonths)

came with all his army against Jerusalem

The name "Jerusalem" is a metonym for the people who lived in it. AT: "came with his whole army to fight against the people of Jerusalem" or "came with his whole army to conquer Jerusalem" (See: rc://en/ta/man/translate/figs-metonymy)