Understanding Hebrew Dates in Genealogical Records
Jewish tombstones and religious records frequently use the Hebrew calendar.
What You’ll Encounter
- Patronymic naming format – In Jewish genealogy, a patronymic naming format identifies a person as the son or daughter of their father, using “ben” or “bat” followed by the father’s Hebrew name to preserve lineage and religious identity across generations.
- Hebrew year abbreviations – Hebrew year abbreviations use Hebrew letters as numerals (gematria), where each letter represents a number. Years are often written without the thousands digit, assuming the current millennium. For example, ה’תשפ”ד represents 5784, תשפ”ג represents 5783, and ה’תש”ן represents 5750. A preceding ה׳ indicates the 5000s. Common era notations include לבריאת העולם (from Creation) and לפ”ק (minor count), which omits the thousands when writing dates in religious and historical texts.
- Biblical month names – The Hebrew biblical calendar uses twelve lunar months. Their names are Nisan, Iyar, Sivan, Tammuz, Av, Elul, Tishrei, Cheshvan, Kislev, Tevet, Shevat, and Adar. In leap years, Adar is divided into Adar I and Adar II. These month names came into common Jewish use after the Babylonian exile and appear in later biblical books and Jewish tradition. Each month connects to agricultural seasons, religious festivals, and historical events described throughout the Hebrew Bible and Jewish calendar year.
Why This Matters
Correct date conversion ensures historical accuracy. Correct date conversion matters in Jewish genealogy because Jewish records often use the Hebrew calendar instead of the Gregorian calendar. Converting dates accurately helps researchers match birth, marriage, death, immigration, and burial records across different countries and archives. Many historical documents, synagogue registers, tombstones, and community records list Hebrew dates. Without proper conversion, events may appear years apart or out of order, leading to mistaken identities, incorrect timelines, and missed family connections essential for building an accurate family history.