Parallel
1 Samuel 27:7
King James Version (1769 Blayney revision, with Apocrypha) · Berean Standard Bible
And the time (note: Heb. the number of days) that David dwelt in the country of the Philistines was a full year (note: Heb. a year of days) and four months.
And the time that David lived in Philistine territory amounted to a year and four months.