|Author||Rabbi Menachem Mendel Schneerson, the seventh Chabad Rebbe|
|Published||1943, Brooklyn (Kehot Publication Society)|
Hayom Yom (Hebrew: היום יום, "Today is day ...") is a calendar for the Hebrew year of 5703 (1942-3), compiled by Rabbi Menachem Mendel Schneerson at the behest of his father-in-law, Rabbi Yosef Yitzchok Schneersohn, in the winter of 1942.
For each day, the calendar prescribed sections of Chumash, Tehillim, and Tanya for study that day; this practice is known in Chabad-Lubavitch as Chitas (חת"ת). Each day's portion of Chumash is studied with the corresponding Rashi commentary.
Each day's entry also noted historical events that happened on that day, or Lubavitcher customs associated with that day, and/or a short inspirational thought for the day, generally taken from the works of the sixth Lubavitcher Rebbe, Yosef Yitzchok Schneersohn. In describing this work, Rabbi Yosef Yitzchak wrote: "A book that is small in format ... but bursting with pearls and diamonds of choicest quality ... A splendid palace of Chasidism."
The calendar was never reissued for subsequent years, but has been reprinted many times, and is still studied. In many Lubavitcher synagogues, the entry for each day is read aloud after the morning service.
- Today's Hayom Yom (English)