@hebcal/learning
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    Class DirshuDafHalachaEvent

    Event wrapper around a Dirshu Daf HaYomi B'Halacha reading — the daily Mishnah Berurah program, one amud of the Dirshu edition from Sunday through Thursday and a review (chazarah) of the week's five days on Friday and Shabbat.

    Readings are transcribed from Dirshu's luach booklets, Hebrew pocket luachs and wall calendars, and run from the third cycle's first day — 20 February 2022 — through 31 August 2027; outside that window DailyLearning.lookup('dirshuDafHalacha', ...) returns null.

    import {HDate} from '@hebcal/hdate';
    import {DailyLearning} from '@hebcal/core';
    import '@hebcal/learning/dirshuDafHalacha';

    const hd = new HDate(new Date(2025, 11, 7));  // 17 Kislev 5786
    const ev = DailyLearning.lookup('dirshuDafHalacha', hd);
    console.log(ev.render('en'));
    // => "Daf HaYomi B'Halacha: Mishnah Berurah 345:1-3"

    Hierarchy (View Summary)

    Index
    constructor
    alarm? date desc emoji? mask memo? reading
    category
    basename getCategories getDate getDesc getEmoji getFlags greg observedIn observedInDiaspora observedInIsrael render renderBrief url
    alarm?: string | boolean | Date

    Alarms are used by iCalendar feeds

    date: HDate

    Hebrew date of this event

    desc: string

    Untranslated title of this event. Note that these description strings are always in English and will remain stable across releases. To get the title of the event in another language, use the render() method.

    emoji?: string

    Optional emoji character such as ✡️, 🕯️, 🕎, 🕍, 🌒

    mask: number

    Bitmask of optional event flags. See flags

    memo?: string

    Optional longer description or memo text

    reading: DirshuDafHalacha
    • get category(): string

      Category name used as the location field in iCalendar event feeds. Subclasses override this with their calendar's display name (e.g. "Daf Yomi", "Daily Rambam", "929").

      Returns string

    • Returns a simplified (untranslated) description for this event, suitable for grouping related events under a single name.

      For example, HolidayEvent strips qualifiers so that "Erev Pesach" → "Pesach" and "Sukkot III (CH''M)" → "Sukkot". For many events the basename and the event description are identical.

      Returns string

      import {HolidayEvent, HDate, months, flags} from '@hebcal/core';
      const ev = new HolidayEvent(
        new HDate(14, months.NISAN, 5784), 'Erev Pesach', flags.EREV);
      ev.getDesc();    // 'Erev Pesach'
      ev.basename();   // 'Pesach'

    • Returns an array of category strings classifying this event, derived from its flags bitmask. The first element is the broad category (e.g. 'holiday', 'roshchodesh', 'parashat', 'omer'), followed by zero or more refinements (e.g. 'major', 'minor', 'fast').

      Returns ['unknown'] if no flag maps to a known category.

      Returns string[]

      import {Event, HDate, flags} from '@hebcal/core';
      new Event(new HDate(10, 'Tishrei', 5784), 'Yom Kippur', flags.MAJOR_FAST)
        .getCategories(); // ['holiday', 'major', 'fast']
      new Event(new HDate(1, 'Shvat', 5784), 'Rosh Chodesh Sh\'vat', flags.ROSH_CHODESH)
        .getCategories(); // ['roshchodesh']

    • Hebrew date of this event

      Returns HDate

    • Untranslated title of this event. Note that these description strings are always in English and will remain stable across releases. To get the title of the event in another language, use the render() method.

      Returns string

    • Returns the event's emoji character (e.g. 🕯️, 🕎, 🇮🇱, 🍏🍯), or null if no emoji is associated with this event. Subclasses override this to provide holiday-specific emoji.

      Returns string | null

    • Bitmask of optional event flags. See flags

      Returns number

    • Gregorian date of this event

      Returns Date

    • Is this event observed in Israel/Diaspora?

      Parameters

      • il: boolean

      Returns boolean

      const ev1 = new Event(new HDate(7, 'Sivan', 5749), 'Shavuot II', flags.CHAG | flags.CHUL_ONLY);
      ev1.observedIn(false); // true
      ev1.observedIn(true); // false
      const ev2 = new Event(new HDate(26, 'Kislev', 5749), 'Chanukah: 3 Candles', 0);
      ev2.observedIn(false); // true
      ev2.observedIn(true); // true

    • Is this event observed in the Diaspora?

      Returns boolean

      const ev1 = new Event(new HDate(7, 'Sivan', 5749), 'Shavuot II', flags.CHAG | flags.CHUL_ONLY);
      ev1.observedInDiaspora(); // true
      const ev2 = new Event(new HDate(26, 'Kislev', 5749), 'Chanukah: 3 Candles', 0);
      ev2.observedInDiaspora(); // true

    • Is this event observed in Israel?

      Returns boolean

      const ev1 = new Event(new HDate(7, 'Sivan', 5749), 'Shavuot II', flags.CHAG | flags.CHUL_ONLY);
      ev1.observedInIsrael(); // false
      const ev2 = new Event(new HDate(26, 'Kislev', 5749), 'Chanukah: 3 Candles', 0);
      ev2.observedInIsrael(); // true

    • Returns the name with "Daf HaYomi B'Halacha: " prefix (e.g. "Daf HaYomi B'Halacha: Mishnah Berurah 345:1-3").

      Parameters

      • Optionallocale: string

        Optional locale name (defaults to empty locale).

      Returns string

    • Returns the book name and reference without the program name (e.g. "Mishnah Berurah 345:1-3", or "Chazarah Mishnah Berurah 345:1-346:3" on the Friday and Shabbat review days).

      Parameters

      • Optionallocale: string

        Optional locale name (defaults to empty locale).

      Returns string

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