Javascript Triennial Torah Readings
“Many congregations pattern their weekly Torah reading cycle after a system similar to the one used in ancient Israel during the rabbinic period. In this system, the traditional parashiot are each divided into three shorter segments, and the whole Torah is completed once every three years. The system has both advantages and disadvantages, but its ability to shorten the length of Torah reading without sacrificing the complete reading of the Torah on a regular basis has made it the choice of some synagogues in the Conservative Movement.”
Update December 2021: In November 2020, the CJLS modified the triennial cycle for some combined parshiyot to change the reading for year 3 to be the third section of the parashah.
Modification of the Triennial Cycle Readings for Combined Parashot in Certain Years, Rabbi Miles B. Cohen
Update August 2022: Incorporated An Emendation to Richard Eisenberg’s Complete Triennial System for Reading Torah, to Address a Rare Situation, Rabbi Joshua Heller, 2012
$ npm install @hebcal/triennial
import {HebrewCalendar, HDate, Event} from '@hebcal/core';
import {formatAliyahWithBook} from '@hebcal/leyning';
import {getTriennialForParshaHaShavua} from '@hebcal/triennial';
const events = HebrewCalendar.calendar({sedrot: true, noHolidays: true});
const ev = events.find((ev) => ev.getDesc() == 'Parashat Pinchas');
const triReading = getTriennialForParshaHaShavua(ev);
for (const [num, aliyah] of Object.entries(triReading)) {
const number = num == 'M' ? 'maftir' : `aliyah ${num}`;
const str = formatAliyahWithBook(aliyah);
console.log(`Triennial ${number}: ${str}`);
}
- Triennial
-
Triennial Torah readings
-
getTriennial(year, [il]) ⇒
Triennial
-
Calculates the 3-year readings for a given year
-
getTriennialHaftaraForHoliday(key, yearNum) ⇒
Object
-
Looks up the alternative triennial Haftara for a holiday
-
getTriennialForParshaHaShavua(ev, [il]) ⇒
TriennialAliyot
-
Looks up the triennial leyning for this Parashat HaShavua
- writeTriennialCsv(stream, hyear, [il])
-
TriennialAliyot :
Object
-
Represents triennial aliyot for a given date
Triennial Torah readings
Kind: global class
-
Triennial
- new Triennial([hebrewYear], [il])
-
instance
-
.getReading(parsha, yearNum) ⇒
TriennialAliyot
-
.getStartYear() ⇒
number
-
.debug() ⇒
string
-
.getReading(parsha, yearNum) ⇒
-
static
-
.getYearNumber(year) ⇒
number
-
.getCycleStartYear(year) ⇒
number
-
.getYearNumber(year) ⇒
Calculates Triennial schedule for entire Hebrew year
Param | Type | Default | Description |
---|---|---|---|
[hebrewYear] | number |
Hebrew Year (default current year) | |
[il] | boolean |
false |
Israel (default false) |
triennial.getReading(parsha, yearNum) ⇒ TriennialAliyot
Kind: instance method of Triennial
Returns: TriennialAliyot
- result, including a map of aliyot 1-7 plus "M"
Param | Type | Description |
---|---|---|
parsha | string |
parsha name ("Bereshit" or "Achrei Mot-Kedoshim") |
yearNum | number |
0 through 2 for which year of Triennial cycle |
Kind: instance method of Triennial
Kind: instance method of Triennial
Returns triennial year 1, 2 or 3 based on this Hebrew year
Kind: static method of Triennial
Param | Type | Description |
---|---|---|
year | number |
Hebrew year |
Returns Hebrew year that this 3-year triennial cycle began
Kind: static method of Triennial
Param | Type | Description |
---|---|---|
year | number |
Hebrew year |
getTriennial(year, [il]) ⇒ Triennial
Calculates the 3-year readings for a given year
Kind: global function
Param | Type | Default | Description |
---|---|---|---|
year | number |
Hebrew year | |
[il] | boolean |
false |
Israel |
Looks up the alternative triennial Haftara for a holiday
Kind: global function
Param | Type |
---|---|
key | string |
yearNum | number |
getTriennialForParshaHaShavua(ev, [il]) ⇒ TriennialAliyot
Looks up the triennial leyning for this Parashat HaShavua
Kind: global function
Returns: TriennialAliyot
- a map of aliyot 1-7 plus "M"
Param | Type | Default | Description |
---|---|---|---|
ev | Event |
||
[il] | boolean |
false |
Israel |
Kind: global function
Param | Type | Default |
---|---|---|
stream | fs.WriteStream |
|
hyear | number |
|
[il] | boolean |
false |
Represents triennial aliyot for a given date
Kind: global typedef
Properties
Name | Type | Description |
---|---|---|
aliyot | Object.<string, Aliyah> |
a map of aliyot 1-7 plus "M" |
yearNum | number |
year number, 0-2 |
date | Date |
Shabbat date for when this parsha is read in this 3-year cycle |
[readSeparately] | boolean |
true if a double parsha is read separately in year yearNum
|
[date1] | Date |
Shabbat date of the first part of a read-separately aliyah pair |
[date2] | Date |
Shabbat date of the second part of a read-separately aliyah pair |
[fullParsha] | boolean |
true if we read the entire parsha |