This document provides information about the months of the year in a 3 sentence summary: The document discusses the origin and definition of a month as a unit of time first used in Mesopotamia to measure the lunar cycle. It then lists each month of the year from January to December in the Julian and Gregorian calendars, noting the order and spelling of each month. The purpose is to teach about the 12 months of the year and their order in the most commonly used calendars.