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Planned

Please add zmanim according to the Baal Hatanya

Menachem Simcha Schulman 1 month ago • updated by Michael J. Radwin 4 weeks ago • 4

Thank you for the great service you provide! It would be great to be able to configure a calendar with zmanim according to the Alter Rebbe of Chabad (Baal Hatanya). They are already implemented by KosherZmanim/KosherJava: https://kosherjava.com/2018/11/27/baal-hatanya-zmanim-added-to-kosherjava/

Ref https://www.chabad.org/calendar/zmanim_cdo/aid/143790/additional/true/bdef/0/before/25/locationid/11213/locationtype/2/tdate/2-22-2025/jewish/Zmanim-Halachic-Times.htm

Extending the wishlist:

  • Even better would be to configure the parshios and haftaros according to minhag Chabad.
  • Even better would be to configure an alternative to JPS for the parsha summaries and link.
  • Even better would be to be able to add the Chabad yoma d'pagra (special days) as requested in topic #1454.
Under review
Michael J. Radwin 4 weeks ago

Thanks for this suggestion. We will endeavor to add these to the Hebcal TypeScript libraries. We can't promise a date by when we will complete these - Hebcal is a volunteer gig, not our day job.


Would you expect to use these as a software developer via web APIs like our Zmanim (halachic times) API, or as an end user with some sort of web pages and calendar feeds? 


Note that we don't currently have any Zmanim web pages on hebcal.com, and our iCalendar feed for Zmanim is considered experimental and doesn't really have a proper web UI. The hebcal.com website is currently more focused on holidays, date conversion, Yahrzeits, and Torah readings. It only exposes a very limited subset of zmanim (candle-lighting, havdalah, and fast start/end times) to end users via the custom calendar creator feature.

Menachem Simcha Schulman 4 weeks ago

Thank you for your consideration. My hope would be to use the times in the web UI when creating a calendar (and it’s iCal feed) for Shabbos and holidays. A “Chabad” option, if you will. (Chabad.org doesn’t have nearly as much flexibility in creating iCal feeds as Hebcal.com.) It would matter in terms of havdala and fast days, for instance.

Menachem Simcha Schulman 4 weeks ago

Using the CLI would also be fine, but we recognize that the JavaScript web UI is more up to date and feature rich compared to the Golang CLI.

Planned
Michael J. Radwin 4 weeks ago

Thanks for getting back to me. We need to first do the lower-level Zmanim integration. We have to do a small amount of porting from KosherZmanim/KosherJava because that 4-year-old package depends on the bloated Luxon library; our fork uses the new JS Temporal. 


Once that's done, it should be more straightforward to add a "Chabad" checkbox to the Hebcal Custom Calendar creator, and a Chabad option for the iCalendar feed for Zmanim.

Again, no promises on when - this is probably a day or two of work. We'll keep this ticket open and update as we make progress and have something for you to test.

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