@apiverve/liturgicalcalendar
v1.2.0
Published
Liturgical Calendar is a simple tool for getting the dates of the Liturgical Calendar. It returns the dates of the Liturgical Calendar for a given year.
Readme
Liturgical Calendar API
Liturgical Calendar is a simple tool for getting the dates of the Liturgical Calendar. It returns the dates of the Liturgical Calendar for a given year.
This is a Javascript Wrapper for the Liturgical Calendar API
Installation
Using npm:
npm install @apiverve/liturgicalcalendarUsing yarn:
yarn add @apiverve/liturgicalcalendarConfiguration
Before using the Liturgical Calendar API client, you have to setup your account and obtain your API Key. You can get it by signing up at https://apiverve.com
Quick Start
Get started with the Quick Start Guide
The Liturgical Calendar API documentation is found here: https://docs.apiverve.com/ref/liturgicalcalendar. You can find parameters, example responses, and status codes documented here.
Setup
const liturgicalcalendarAPI = require('@apiverve/liturgicalcalendar');
const api = new liturgicalcalendarAPI({
api_key: '[YOUR_API_KEY]'
});Usage
Perform Request
Using the API is simple. All you have to do is make a request. The API will return a response with the data you requested.
var query = {
month: 2,
year: 2025
};
api.execute(query, function (error, data) {
if (error) {
return console.error(error);
} else {
console.log(data);
}
});Using Promises
You can also use promises to make requests. The API returns a promise that you can use to handle the response.
var query = {
month: 2,
year: 2025
};
api.execute(query)
.then(data => {
console.log(data);
})
.catch(error => {
console.error(error);
});Using Async/Await
You can also use async/await to make requests. The API returns a promise that you can use to handle the response.
async function makeRequest() {
var query = {
month: 2,
year: 2025
};
try {
const data = await api.execute(query);
console.log(data);
} catch (error) {
console.error(error);
}
}Example Response
{
"status": "ok",
"error": null,
"data": {
"2025-12-01": [
{
"id": "advent_1_monday",
"date": "2025-12-01",
"dateDef": {
"dateFn": "unprivilegedWeekdayOfAdvent",
"dateArgs": [
1,
1
],
"yearOffset": 0
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "WEEKDAY_13",
"rank": "WEEKDAY",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": false,
"i18nDef": [
"seasons:advent.weekday",
{
"week": 1,
"dow": 1
}
],
"seasons": [
"ADVENT"
],
"periods": [],
"colors": [
"PURPLE"
],
"commonsDef": [],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 1,
"dayOfSeason": 2,
"dayOfWeek": 1,
"nthDayOfWeekInMonth": 1,
"startOfSeason": "2025-11-30",
"endOfSeason": "2025-12-24",
"startOfLiturgicalYear": "2025-11-30",
"endOfLiturgicalYear": "2026-11-28",
"seasons": [
"ADVENT"
]
},
"cycles": {
"properCycle": "PROPER_OF_TIME",
"sundayCycle": "YEAR_A",
"weekdayCycle": "YEAR_2",
"psalterWeek": "WEEK_1"
},
"fromCalendarId": "ProperOfTime",
"fromExtendedCalendars": []
}
],
"2025-12-02": [
{
"id": "advent_1_tuesday",
"date": "2025-12-02",
"dateDef": {
"dateFn": "unprivilegedWeekdayOfAdvent",
"dateArgs": [
2,
1
],
"yearOffset": 0
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "WEEKDAY_13",
"rank": "WEEKDAY",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": false,
"i18nDef": [
"seasons:advent.weekday",
{
"week": 1,
"dow": 2
}
],
"seasons": [
"ADVENT"
],
"periods": [],
"colors": [
"PURPLE"
],
"commonsDef": [],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 1,
"dayOfSeason": 3,
"dayOfWeek": 2,
"nthDayOfWeekInMonth": 1,
"startOfSeason": "2025-11-30",
"endOfSeason": "2025-12-24",
"startOfLiturgicalYear": "2025-11-30",
"endOfLiturgicalYear": "2026-11-28",
"seasons": [
"ADVENT"
]
},
"cycles": {
"properCycle": "PROPER_OF_TIME",
"sundayCycle": "YEAR_A",
"weekdayCycle": "YEAR_2",
"psalterWeek": "WEEK_1"
},
"fromCalendarId": "ProperOfTime",
"fromExtendedCalendars": []
}
],
"2025-12-03": [
{
"id": "francis_xavier_priest",
"date": "2025-12-03",
"dateDef": {
"month": 12,
"date": 3
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "GENERAL_MEMORIAL_10",
"rank": "MEMORIAL",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": false,
"i18nDef": [
"names:francis_xavier_priest"
],
"seasons": [
"ADVENT"
],
"periods": [],
"colors": [
"WHITE"
],
"commonsDef": [
"None"
],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 1,
"dayOfSeason": 4,
"dayOfWeek": 3,
"nthDayOfWeekInMonth": 1,
"startOfSeason": "2025-11-30",
"endOfSeason": "2025-12-24",
"startOfLiturgicalYear": "2025-11-30",
"endOfLiturgicalYear": "2026-11-28",
"seasons": [
"ADVENT"
]
},
"cycles": {
"properCycle": "PROPER_OF_SAINTS",
"sundayCycle": "YEAR_A",
"weekdayCycle": "YEAR_2",
"psalterWeek": "WEEK_1"
},
"fromCalendarId": "ma",
"fromExtendedCalendars": [],
"weekday": {
"id": "advent_1_wednesday",
"date": "2025-12-03",
"dateDef": {
"dateFn": "unprivilegedWeekdayOfAdvent",
"dateArgs": [
3,
1
],
"yearOffset": 0
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "WEEKDAY_13",
"rank": "WEEKDAY",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": false,
"i18nDef": [
"seasons:advent.weekday",
{
"week": 1,
"dow": 3
}
],
"seasons": [
"ADVENT"
],
"periods": [],
"colors": [
"PURPLE"
],
"commonsDef": [],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 1,
"dayOfSeason": 4,
"dayOfWeek": 3,
"nthDayOfWeekInMonth": 1,
"startOfSeason": "2025-11-30",
"endOfSeason": "2025-12-24",
"startOfLiturgicalYear": "2025-11-30",
"endOfLiturgicalYear": "2026-11-28",
"seasons": [
"ADVENT"
]
},
"cycles": {
"properCycle": "PROPER_OF_TIME",
"sundayCycle": "YEAR_A",
"weekdayCycle": "YEAR_2",
"psalterWeek": "WEEK_1"
},
"fromCalendarId": "ProperOfTime",
"fromExtendedCalendars": []
}
}
],
"2025-12-04": [
{
"id": "advent_1_thursday",
"date": "2025-12-04",
"dateDef": {
"dateFn": "unprivilegedWeekdayOfAdvent",
"dateArgs": [
4,
1
],
"yearOffset": 0
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "WEEKDAY_13",
"rank": "WEEKDAY",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": false,
"i18nDef": [
"seasons:advent.weekday",
{
"week": 1,
"dow": 4
}
],
"seasons": [
"ADVENT"
],
"periods": [],
"colors": [
"PURPLE"
],
"commonsDef": [],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 1,
"dayOfSeason": 5,
"dayOfWeek": 4,
"nthDayOfWeekInMonth": 1,
"startOfSeason": "2025-11-30",
"endOfSeason": "2025-12-24",
"startOfLiturgicalYear": "2025-11-30",
"endOfLiturgicalYear": "2026-11-28",
"seasons": [
"ADVENT"
]
},
"cycles": {
"properCycle": "PROPER_OF_TIME",
"sundayCycle": "YEAR_A",
"weekdayCycle": "YEAR_2",
"psalterWeek": "WEEK_1"
},
"fromCalendarId": "ProperOfTime",
"fromExtendedCalendars": []
},
{
"id": "john_damascene_priest",
"date": "2025-12-04",
"dateDef": {
"month": 12,
"date": 4
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "OPTIONAL_MEMORIAL_12",
"rank": "OPTIONAL_MEMORIAL",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": true,
"i18nDef": [
"names:john_damascene_priest"
],
"seasons": [
"ADVENT"
],
"periods": [],
"colors": [
"WHITE"
],
"commonsDef": [
"Pastors",
"DoctorsOfTheChurch"
],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 1,
"dayOfSeason": 5,
"dayOfWeek": 4,
"nthDayOfWeekInMonth": 1,
"startOfSeason": "2025-11-30",
"endOfSeason": "2025-12-24",
"startOfLiturgicalYear": "2025-11-30",
"endOfLiturgicalYear": "2026-11-28",
"seasons": [
"ADVENT"
]
},
"cycles": {
"properCycle": "PROPER_OF_SAINTS",
"sundayCycle": "YEAR_A",
"weekdayCycle": "YEAR_2",
"psalterWeek": "WEEK_1"
},
"fromCalendarId": "ma",
"fromExtendedCalendars": [],
"weekday": {
"id": "advent_1_thursday",
"date": "2025-12-04",
"dateDef": {
"dateFn": "unprivilegedWeekdayOfAdvent",
"dateArgs": [
4,
1
],
"yearOffset": 0
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "WEEKDAY_13",
"rank": "WEEKDAY",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": false,
"i18nDef": [
"seasons:advent.weekday",
{
"week": 1,
"dow": 4
}
],
"seasons": [
"ADVENT"
],
"periods": [],
"colors": [
"PURPLE"
],
"commonsDef": [],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 1,
"dayOfSeason": 5,
"dayOfWeek": 4,
"nthDayOfWeekInMonth": 1,
"startOfSeason": "2025-11-30",
"endOfSeason": "2025-12-24",
"startOfLiturgicalYear": "2025-11-30",
"endOfLiturgicalYear": "2026-11-28",
"seasons": [
"ADVENT"
]
},
"cycles": {
"properCycle": "PROPER_OF_TIME",
"sundayCycle": "YEAR_A",
"weekdayCycle": "YEAR_2",
"psalterWeek": "WEEK_1"
},
"fromCalendarId": "ProperOfTime",
"fromExtendedCalendars": []
}
}
],
"2025-12-05": [
{
"id": "advent_1_friday",
"date": "2025-12-05",
"dateDef": {
"dateFn": "unprivilegedWeekdayOfAdvent",
"dateArgs": [
5,
1
],
"yearOffset": 0
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "WEEKDAY_13",
"rank": "WEEKDAY",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": false,
"i18nDef": [
"seasons:advent.weekday",
{
"week": 1,
"dow": 5
}
],
"seasons": [
"ADVENT"
],
"periods": [],
"colors": [
"PURPLE"
],
"commonsDef": [],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 1,
"dayOfSeason": 6,
"dayOfWeek": 5,
"nthDayOfWeekInMonth": 1,
"startOfSeason": "2025-11-30",
"endOfSeason": "2025-12-24",
"startOfLiturgicalYear": "2025-11-30",
"endOfLiturgicalYear": "2026-11-28",
"seasons": [
"ADVENT"
]
},
"cycles": {
"properCycle": "PROPER_OF_TIME",
"sundayCycle": "YEAR_A",
"weekdayCycle": "YEAR_2",
"psalterWeek": "WEEK_1"
},
"fromCalendarId": "ProperOfTime",
"fromExtendedCalendars": []
}
],
"2025-12-06": [
{
"id": "advent_1_saturday",
"date": "2025-12-06",
"dateDef": {
"dateFn": "unprivilegedWeekdayOfAdvent",
"dateArgs": [
6,
1
],
"yearOffset": 0
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "WEEKDAY_13",
"rank": "WEEKDAY",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": false,
"i18nDef": [
"seasons:advent.weekday",
{
"week": 1,
"dow": 6
}
],
"seasons": [
"ADVENT"
],
"periods": [],
"colors": [
"PURPLE"
],
"commonsDef": [],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 1,
"dayOfSeason": 7,
"dayOfWeek": 6,
"nthDayOfWeekInMonth": 1,
"startOfSeason": "2025-11-30",
"endOfSeason": "2025-12-24",
"startOfLiturgicalYear": "2025-11-30",
"endOfLiturgicalYear": "2026-11-28",
"seasons": [
"ADVENT"
]
},
"cycles": {
"properCycle": "PROPER_OF_TIME",
"sundayCycle": "YEAR_A",
"weekdayCycle": "YEAR_2",
"psalterWeek": "WEEK_1"
},
"fromCalendarId": "ProperOfTime",
"fromExtendedCalendars": []
},
{
"id": "nicholas_of_myra_bishop",
"date": "2025-12-06",
"dateDef": {
"month": 12,
"date": 6
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "OPTIONAL_MEMORIAL_12",
"rank": "OPTIONAL_MEMORIAL",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": true,
"i18nDef": [
"names:nicholas_of_myra_bishop"
],
"seasons": [
"ADVENT"
],
"periods": [],
"colors": [
"WHITE"
],
"commonsDef": [
"Bishops"
],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 1,
"dayOfSeason": 7,
"dayOfWeek": 6,
"nthDayOfWeekInMonth": 1,
"startOfSeason": "2025-11-30",
"endOfSeason": "2025-12-24",
"startOfLiturgicalYear": "2025-11-30",
"endOfLiturgicalYear": "2026-11-28",
"seasons": [
"ADVENT"
]
},
"cycles": {
"properCycle": "PROPER_OF_SAINTS",
"sundayCycle": "YEAR_A",
"weekdayCycle": "YEAR_2",
"psalterWeek": "WEEK_1"
},
"fromCalendarId": "ma",
"fromExtendedCalendars": [],
"weekday": {
"id": "advent_1_saturday",
"date": "2025-12-06",
"dateDef": {
"dateFn": "unprivilegedWeekdayOfAdvent",
"dateArgs": [
6,
1
],
"yearOffset": 0
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "WEEKDAY_13",
"rank": "WEEKDAY",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": false,
"i18nDef": [
"seasons:advent.weekday",
{
"week": 1,
"dow": 6
}
],
"seasons": [
"ADVENT"
],
"periods": [],
"colors": [
"PURPLE"
],
"commonsDef": [],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 1,
"dayOfSeason": 7,
"dayOfWeek": 6,
"nthDayOfWeekInMonth": 1,
"startOfSeason": "2025-11-30",
"endOfSeason": "2025-12-24",
"startOfLiturgicalYear": "2025-11-30",
"endOfLiturgicalYear": "2026-11-28",
"seasons": [
"ADVENT"
]
},
"cycles": {
"properCycle": "PROPER_OF_TIME",
"sundayCycle": "YEAR_A",
"weekdayCycle": "YEAR_2",
"psalterWeek": "WEEK_1"
},
"fromCalendarId": "ProperOfTime",
"fromExtendedCalendars": []
}
}
],
"2025-12-07": [
{
"id": "advent_2_sunday",
"date": "2025-12-07",
"dateDef": {
"dateFn": "sundayOfAdvent",
"dateArgs": [
2
],
"yearOffset": 0
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "PRIVILEGED_SUNDAY_2",
"rank": "SUNDAY",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": true,
"isOptional": false,
"i18nDef": [
"seasons:advent.sunday",
{
"week": 2
}
],
"seasons": [
"ADVENT"
],
"periods": [],
"colors": [
"PURPLE"
],
"commonsDef": [],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 2,
"dayOfSeason": 8,
"dayOfWeek": 0,
"nthDayOfWeekInMonth": 1,
"startOfSeason": "2025-11-30",
"endOfSeason": "2025-12-24",
"startOfLiturgicalYear": "2025-11-30",
"endOfLiturgicalYear": "2026-11-28",
"seasons": [
"ADVENT"
]
},
"cycles": {
"properCycle": "PROPER_OF_TIME",
"sundayCycle": "YEAR_A",
"weekdayCycle": "YEAR_2",
"psalterWeek": "WEEK_2"
},
"fromCalendarId": "ProperOfTime",
"fromExtendedCalendars": []
}
],
"2025-12-08": [
{
"id": "immaculate_conception_of_the_blessed_virgin_mary",
"date": "2025-12-08",
"dateDef": {
"dateFn": "immaculateConceptionOfMary"
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "GENERAL_SOLEMNITY_3",
"rank": "SOLEMNITY",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": true,
"isOptional": false,
"i18nDef": [
"names:immaculate_conception_of_the_blessed_virgin_mary"
],
"seasons": [
"ADVENT"
],
"periods": [],
"colors": [
"WHITE"
],
"commonsDef": [
"None"
],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 2,
"dayOfSeason": 9,
"dayOfWeek": 1,
"nthDayOfWeekInMonth": 2,
"startOfSeason": "2025-11-30",
"endOfSeason": "2025-12-24",
"startOfLiturgicalYear": "2025-11-30",
"endOfLiturgicalYear": "2026-11-28",
"seasons": [
"ADVENT"
]
},
"cycles": {
"properCycle": "PROPER_OF_SAINTS",
"sundayCycle": "YEAR_A",
"weekdayCycle": "YEAR_2",
"psalterWeek": "WEEK_2"
},
"fromCalendarId": "ma",
"fromExtendedCalendars": []
}
],
"2025-12-09": [
{
"id": "advent_2_tuesday",
"date": "2025-12-09",
"dateDef": {
"dateFn": "unprivilegedWeekdayOfAdvent",
"dateArgs": [
2,
2
],
"yearOffset": 0
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "WEEKDAY_13",
"rank": "WEEKDAY",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": false,
"i18nDef": [
"seasons:advent.weekday",
{
"week": 2,
"dow": 2
}
],
"seasons": [
"ADVENT"
],
"periods": [],
"colors": [
"PURPLE"
],
"commonsDef": [],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 2,
"dayOfSeason": 10,
"dayOfWeek": 2,
"nthDayOfWeekInMonth": 2,
"startOfSeason": "2025-11-30",
"endOfSeason": "2025-12-24",
"startOfLiturgicalYear": "2025-11-30",
"endOfLiturgicalYear": "2026-11-28",
"seasons": [
"ADVENT"
]
},
"cycles": {
"properCycle": "PROPER_OF_TIME",
"sundayCycle": "YEAR_A",
"weekdayCycle": "YEAR_2",
"psalterWeek": "WEEK_2"
},
"fromCalendarId": "ProperOfTime",
"fromExtendedCalendars": []
},
{
"id": "juan_diego_cuauhtlatoatzin",
"date": "2025-12-09",
"dateDef": {
"month": 12,
"date": 9
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "OPTIONAL_MEMORIAL_12",
"rank": "OPTIONAL_MEMORIAL",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": true,
"i18nDef": [
"names:juan_diego_cuauhtlatoatzin"
],
"seasons": [
"ADVENT"
],
"periods": [],
"colors": [
"WHITE"
],
"commonsDef": [
"Saints"
],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 2,
"dayOfSeason": 10,
"dayOfWeek": 2,
"nthDayOfWeekInMonth": 2,
"startOfSeason": "2025-11-30",
"endOfSeason": "2025-12-24",
"startOfLiturgicalYear": "2025-11-30",
"endOfLiturgicalYear": "2026-11-28",
"seasons": [
"ADVENT"
]
},
"cycles": {
"properCycle": "PROPER_OF_SAINTS",
"sundayCycle": "YEAR_A",
"weekdayCycle": "YEAR_2",
"psalterWeek": "WEEK_2"
},
"fromCalendarId": "ma",
"fromExtendedCalendars": [],
"weekday": {
"id": "advent_2_tuesday",
"date": "2025-12-09",
"dateDef": {
"dateFn": "unprivilegedWeekdayOfAdvent",
"dateArgs": [
2,
2
],
"yearOffset": 0
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "WEEKDAY_13",
"rank": "WEEKDAY",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": false,
"i18nDef": [
"seasons:advent.weekday",
{
"week": 2,
"dow": 2
}
],
"seasons": [
"ADVENT"
],
"periods": [],
"colors": [
"PURPLE"
],
"commonsDef": [],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 2,
"dayOfSeason": 10,
"dayOfWeek": 2,
"nthDayOfWeekInMonth": 2,
"startOfSeason": "2025-11-30",
"endOfSeason": "2025-12-24",
"startOfLiturgicalYear": "2025-11-30",
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