Hebrew Calendar Resources

A curated list of open-source tools, libraries, APIs, and integrations for working with the Hebrew (Jewish) calendar, zmanim (halachic times), and related calculations.

Python Libraries

• pyluach — Python package for Hebrew date conversions and calculations

  simlist/pyluach ★ 68

  A Python package for manipulating Hebrew (Jewish) calendar dates and Hebrew-Gregorian conversion.

  Python12 forksUpdated Jan 2026
  calendarhebrew-calendarhebrew-datejewishjewish-calendar

• py-libhdate — Python bindings for libhdate, providing Hebrew calendar and zmanim

  py-libhdate/py-libhdate ★ 40

  Python 3 library for Hebrew date and zmanim (times) objects in python

  Python19 forksUpdated Jan 2026
  hebrew-calendarpython-librarypython27python3python3-library

JavaScript / TypeScript Libraries

• jewish-date — JavaScript library for Hebrew date conversions

  Shmulik-Kravitz/jewish-date ★ 68

  Jewish Date is a fast and modern 2kB JavaScript library that provides a simple and efficient Gregorian-to-Hebrew and vice versa date converter.

  TypeScript5 forksUpdated Mar 2026
  browsercalendarconvertdatehdate

• hebcal-es6 — Modern ES6 JavaScript library for Hebrew calendar calculations by Hebcal

  hebcal/hebcal-es6 ★ 121

  perpetual Jewish Calendar with holidays, Shabbat and holiday candle lighting and havdalah times, Torah readings, and more

  TypeScript25 forksUpdated Apr 2026
  calendardaf-yomihebrew-calendarhebrew-dateholidays

Java Libraries

• KosherJava Zmanim — Comprehensive Java library for calculating zmanim (halachic times)

  KosherJava/zmanim ★ 126

  KosherJava Zmanim API / Library

  Java57 forksUpdated Apr 2026
  calendarsdaf-yomidawnduskhebrew-calendar

Web Services & APIs

• Hebcal — Full-featured Hebrew calendar web service with holiday, parsha, and zmanim data

• hebcal-rest-api — REST API for Hebcal's Hebrew calendar services

  hebcal/hebcal-rest-api ★ 18

  Jewish holidays and Hebrew calendar exports as RSS, CSV, and FullCalendar.io objects, and more

  JavaScriptUpdated Apr 2026

• TorahCalc — Tools for biblical/Talmudic unit conversions, gematria, Hebrew calendar, and zmanim

  torahcalc/torahcalc ★ 25

  New website and API for TorahCalc - Tools for Torah study

  JavaScript8 forksUpdated Apr 2026
  gematriahacktoberfesthalachahebrew-calendarjudaism

MCP Servers

• hebcal-mcp — MCP server for Hebcal Hebrew calendar data

  hebcal/hebcal-mcp ★ 5

  Model Context Protocol extension for Hebrew calendar

  TypeScript2 forksUpdated Mar 2026

• zmanim-mcp-server — MCP server for zmanim (halachic times) calculations

  ariroffe72/zmanim-mcp-server ★ 1

  A comprehensive MCP server for calculating Jewish prayer times (zmanim).

  PythonUpdated Oct 2025
  judaism

Smart Home & Desktop Integrations

• Home Assistant Jewish Calendar — Official Home Assistant integration for Jewish calendar sensors

• MMM-HebrewCalendar — MagicMirror module for displaying the Hebrew calendar

  neshkoli/MMM-HebrewCalendar ★ 2

  MagicMirror2 module allows you to view Hebrew calendar with your events in a monthly calendar view

  JavaScriptUpdated Mar 2026

• Hebrew-Date-KDE-Widget — KDE Plasma widget displaying the current Hebrew date

  danielrosehill/Hebrew-Date-KDE-Widget ★ 1

  WIP - KDE Plasmoid for displaying the Hebrew calendar date

  QMLUpdated Nov 2025

Full-Stack Applications

• myHebrewDates — Track and get reminders for Hebrew date anniversaries (yahrzeits, birthdays, etc.)

  abe-101/myHebrewDates ★ 25

  Automatically sync recurring Hebrew calendar events, like birthdays and anniversaries, to your digital calendar

  SCSS7 forksUpdated Apr 2026
  djangohebrewicalicalendarics

Contributing

Know of a Hebrew calendar resource that should be listed here? Open an issue or submit a pull request.

License

This resource list is provided under the CC0 1.0 Universal public domain dedication.