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- Hebcal web APIs do not require registration or API keys
- Rate-limiting is used to throttle clients who are sending too many API queries. You may receive a 429 “Too Many Requests” error if your client makes more than 90 requests in a 10-second window. Remember, this is a free service; please be polite and send batch API requests slowly over a longer period of time
Shabbat Times – embed weekly Shabbat candle-lighting times and Torah portion directly on your synagogue’s website
Today’s Hebrew Date – a simple script to display only today’s date in Hebrew or in English transliteration
Shabbat Times WordPress widget – add Torah portion, candle lighting and havdalah times to your WordPress-powered site.
RSS feeds – integrate Hebrew date, Parsahat ha-Shavua, or candle lighting times into any content management system supporting RSS.
iCalendar feeds – calendar event feeds for many consumer calendar applications such as Google Calendar, Outlook.com, etc.
Advanced REST APIs
Hebrew Date Converter REST API – for converting between Gregorian and Hebrew dates (XML + JSON).
Jewish calendar REST API – a JSON interface for fetching Jewish calendar data (holidays, Torah readings, candle lighting times, etc).
Leyning (Torah Reading) API – full kriyah leyning on Shabbat and holidays, Triennial (optionally) for Shabbat, and weekday readings on Mondays & Thursdays.
Yahrzeit + Anniversary API – Generate a list of Yahrzeit (memorial) and Yizkor dates, Hebrew Birthdays and Anniversaries for the next 20 years.
Zmanim API – for calculating halachic times (Alot HaShachar, misheyakir, sof zman Shma, etc).
hebcal-go – Go Language (Golang) port
hebcal-swift – Swift port
Open Source Judaism
Learn more about the Open Source Judaism movement.