Hayom Yom, an expression which translates as "Day by Day," is a collection of concise thoughts, often relevant to the season or portion of study when it appears, which gives the reader food to sustain the soul each day of the year. HaYom Yom was written to be used in 1942-1943 (5703 in the Hebrew calendar), and that format has been retained; the daily lessons, the Haftora, etc. thus relate to that specific year.