The selections of haftarot readings for the various weeks, and holy days, of the year differs from tradition to tradition - Ashkenazic from Sefardic from Yemenite from Mizrachi, etc. And even within a tradition there is no one authoritative list, but a multitude of different lists from different communities and congregations, usually differing from each other by only one or two haftarot. A study of the antiquity of each of these lists, and how they differ from each other, is beyond the scope of this (or any other brief) article but may be most informative on the history (including the contacts and separations) of the various communities.