What module loader is global.get? I've never seen this before and don't really understand what that is doing, nor where the hebcalCore or hebcalLearning names are coming from (those particular camelCase names are NOT used by our code, so they must be yours?).

For a standard ES import, you'd use this:

import {HebrewCalendar, Location, Event, HDate} from '@hebcal/core';
import '@hebcal/learning';

Or using dynamic imports:

const {HebrewCalendar, Location, Event, HDate} = await import('@hebcal/core');
await import('@hebcal/learning');

Short answer: use

dafYomi: true

Note the camelCase.

Long answer: we need to improve our documentation.

The names of the dailyLearning calendars are published here in the Readme, but we need a few more code examples.

https://github.com/hebcal/hebcal-learning/blob/main/README.md

Glad to hear you got it to work!

Thank you for contacting Hebcal.

The 1 year option for Apple, Google, and Outlook is actually already in iCalendar format. If you need a 1-year option for iCalendar, just download one of those choices. If you prefer a perpetual calendar feed, you can continue to use our iCalendar feed option.

Happy Gregorian New year!

Hi, thanks for using Hebcal!

Pages generated by the Interactive Jewish Calendar can be printed only in landscape mode on standard 8.5×11″ paper.

To print other sizes or to customize, we recommend downloading/exporting from hebcal.com and importing into a more full-featured desktop or web calendar program, such as one of the following:

• Outlook CSV – Outlook has extremely powerful print features (Daily, Weekly, Monthly, Tri-fold, Calendar Details, Day-Timer, Day Runner, Franklin Day Planner, etc.)
• Google Calendar – offers Day, Week, Month, or Agenda views with customizable date range, font size, page orientation, and color setting (see also “Print your calendar” from Google support)
• Apple macOS Calendar – offers Day, Week, Month, List, Selected Events in US Letter and other standard paper formats. Options include All-day events, Timed events, Color/Black and white, and text size controls.

Happy Chanukah and Gregorian New Year!

Use greg2abs to convert from Gregorian date to R.D. (Rata Die) absolute date

https://github.com/hebcal/hebcal/blob/v4.31/greg.c

Then use abs2hebrew to convert to Hebrew date

https://github.com/hebcal/hebcal/blob/v4.31/common.c

When you customize your calendar, enter "0" (zero) in the Havdalah minutes past sundown box to disable Havdalah times.

https://www.hebcal.com/hebcal

Hebcal.com supports over 100,000 different GeoName IDs. These are world cities with a population of 1,000 or more. 

See cities1000.zip from https://download.geonames.org/export/dump/

If you download cities1000.zip it should match what we have on Hebcal.com

Draft version on Hebcal website. 

For some reason the Sefaria source you pointed us to skips Yoreh De'ah simanim 1-62 and 64-83.4:

8/4/2032,Arukh_HaShulchan%2C_Orach_Chaim.696.12-697.2
8/5/2032,Arukh_HaShulchan%2C_Yoreh_De'ah.63.1-8
8/6/2032,Arukh_HaShulchan%2C_Yoreh_De'ah.63.9-17
8/7/2032,Arukh_HaShulchan%2C_Yoreh_De'ah.83.5-9
8/8/2032,Arukh_HaShulchan%2C_Yoreh_De'ah.83.10-19

Thanks for using the Hebcal Yahrzeit + Anniversary calendar, and thanks for your feedback.

The "duplicate" events you are seeing are the optional calendar reminders the day before each yahrzeit. This is not a bug, nor are they duplicate events. They are an optional reminder with an alarm to help users light candles the evening the Yahrzeit begins.

If you don't want these day-before reminders, please simply uncheck the "Calendar reminder day before yahrzeit" box before downloading or subscribing to the calendar feed.