Hebrew Birthday & Anniversary Calendar
Find future Gregorian dates for a Hebrew birthday or personal anniversary, with explicit Adar and short-month rules.
Starts with an editable example. Replace the dates and rules with your own.
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Choose your dates.
Select your counting rules and calculate.
Calculation details
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How to use this calculator
Enter the original Gregorian date and sunset boundary, then choose the first future Hebrew year, number of years and ordinary-Adar policy.
Birthday rules preserve the original leap-month identity. A missing day 30 moves into the following month. Calendar events mark the daylight date and describe when the observance begins the evening before.
A worked example
A birthday in ordinary-year Adar moves to Adar II in a leap year under the default birthday convention.
Is this also a memorial-date calculator?
Memorial anniversaries can use different rules, particularly for Cheshvan, Kislev and Adar. Use the separate Yahrzeit Calculator for those conventions.
Further reading: Hebcal anniversary conventions. Your entered rules determine this result.
Which calendar and years are supported?
Gregorian input coverage is 1900-2100 unless the method states a narrower range. Results explain calendar conventions and local date boundaries. Astronomy uses a level horizon at sea level. CSV, print and copy retain the result rules; calendar files contain only calculated events. Nothing is scheduled automatically.
What happens to my dates?
Calculations run on your device. Saving a calculation is optional and keeps it in this browser. A setup link contains the dates and settings you entered; anyone with the link can read them. Use one tab per saved calculator. Clear saved data from Privacy & settings.