The Hebrew Calendar From Tishrei to Kislev

"The Hebrew Calendar From Tishrei to Kislev" by Eli Mercer examines the initial three months of the Hebrew calendar, illustrating the system's operational principles. The book details the transition from the numerous sacred days of Tishrei to the more ordinary weeks of Heshvan, and then to Kislev, which leads into Hanukkah. Mercer elucidates concepts such as lunar months, solar adjustments, variations in month lengths, date conversions, the significance of Rosh Chodesh, and the weekly Torah cycle within this specific three-month period. The author maintains a clear distinction between religious practices, ensuring that Halakha is not conflated with custom, Midrash, historical accounts, or personal reflections. Seasonal prayer changes are acknowledged as varying by location and rite, without imposing a singular schedule.

This guide explores various themes, including the distinct observance of Sigd within Ethiopian Jewish tradition during Heshvan, and the devotional nature of Rachel traditions, without making archaeological or geopolitical assertions regarding her tomb. The narrative of Noah and the Flood is presented as a Torah story, not as established scientific history. The text also includes planning pages designed to assist families in coordinating Jewish and civil dates for school, work, and synagogue, while recognizing that household observances are not uniform. A final section clarifies how Kislev's date is partially determined by Heshvan's variable length, emphasizing the continuity of the calendar system.