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.
1 token/call
246ms avg
99% uptime
Live Test API
Try out the Liturgical Calendar with a live request and see the response in real-time.
API Request
GET
https://api.apiverve.com
Query Parameters
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API Response
200 OK
{
"status": "ok",
"error": null,
"data": {
"2025-03-01": [
{
"id": "ordinary_time_7_saturday",
"date": "2025-03-01",
"dateDef": {
"dateFn": "dateOfOrdinaryTime",
"dateArgs": [
6,
7
],
"yearOffset": 0
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "WEEKDAY_13",
"rank": "WEEKDAY",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": false,
"i18nDef": [
"seasons:ordinary_time.weekday",
{
"week": 7,
"dow": 6
}
],
"seasons": [
"ORDINARY_TIME"
],
"periods": [
"EARLY_ORDINARY_TIME"
],
"colors": [
"GREEN"
],
"commonsDef": [],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 7,
"dayOfSeason": 48,
"dayOfWeek": 6,
"nthDayOfWeekInMonth": 1,
"startOfSeason": "2025-01-13",
"endOfSeason": "2025-11-29",
"startOfLiturgicalYear": "2024-12-01",
"endOfLiturgicalYear": "2025-11-29",
"seasons": [
"ORDINARY_TIME"
]
},
"cycles": {
"properCycle": "PROPER_OF_TIME",
"sundayCycle": "YEAR_C",
"weekdayCycle": "YEAR_1",
"psalterWeek": "WEEK_3"
},
"fromCalendarId": "ProperOfTime",
"fromExtendedCalendars": []
}
],
"2025-03-02": [
{
"id": "ordinary_time_8_sunday",
"date": "2025-03-02",
"dateDef": {
"dateFn": "dateOfOrdinaryTime",
"dateArgs": [
0,
8
],
"yearOffset": 0
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "UNPRIVILEGED_SUNDAY_6",
"rank": "SUNDAY",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": true,
"isOptional": false,
"i18nDef": [
"seasons:ordinary_time.sunday",
{
"week": 8
}
],
"seasons": [
"ORDINARY_TIME"
],
"periods": [
"EARLY_ORDINARY_TIME"
],
"colors": [
"GREEN"
],
"commonsDef": [],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 8,
"dayOfSeason": 49,
"dayOfWeek": 0,
"nthDayOfWeekInMonth": 1,
"startOfSeason": "2025-01-13",
"endOfSeason": "2025-11-29",
"startOfLiturgicalYear": "2024-12-01",
"endOfLiturgicalYear": "2025-11-29",
"seasons": [
"ORDINARY_TIME"
]
},
"cycles": {
"properCycle": "PROPER_OF_TIME",
"sundayCycle": "YEAR_C",
"weekdayCycle": "YEAR_1",
"psalterWeek": "WEEK_4"
},
"fromCalendarId": "ProperOfTime",
"fromExtendedCalendars": []
}
],
"2025-03-03": [
{
"id": "ordinary_time_8_monday",
"date": "2025-03-03",
"dateDef": {
"dateFn": "dateOfOrdinaryTime",
"dateArgs": [
1,
8
],
"yearOffset": 0
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "WEEKDAY_13",
"rank": "WEEKDAY",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": false,
"i18nDef": [
"seasons:ordinary_time.weekday",
{
"week": 8,
"dow": 1
}
],
"seasons": [
"ORDINARY_TIME"
],
"periods": [
"EARLY_ORDINARY_TIME"
],
"colors": [
"GREEN"
],
"commonsDef": [],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 8,
"dayOfSeason": 50,
"dayOfWeek": 1,
"nthDayOfWeekInMonth": 1,
"startOfSeason": "2025-01-13",
"endOfSeason": "2025-11-29",
"startOfLiturgicalYear": "2024-12-01",
"endOfLiturgicalYear": "2025-11-29",
"seasons": [
"ORDINARY_TIME"
]
},
"cycles": {
"properCycle": "PROPER_OF_TIME",
"sundayCycle": "YEAR_C",
"weekdayCycle": "YEAR_1",
"psalterWeek": "WEEK_4"
},
"fromCalendarId": "ProperOfTime",
"fromExtendedCalendars": []
}
],
"2025-03-04": [
{
"id": "ordinary_time_8_tuesday",
"date": "2025-03-04",
"dateDef": {
"dateFn": "dateOfOrdinaryTime",
"dateArgs": [
2,
8
],
"yearOffset": 0
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "WEEKDAY_13",
"rank": "WEEKDAY",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": false,
"i18nDef": [
"seasons:ordinary_time.weekday",
{
"week": 8,
"dow": 2
}
],
"seasons": [
"ORDINARY_TIME"
],
"periods": [
"EARLY_ORDINARY_TIME"
],
"colors": [
"GREEN"
],
"commonsDef": [],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 8,
"dayOfSeason": 51,
"dayOfWeek": 2,
"nthDayOfWeekInMonth": 1,
"startOfSeason": "2025-01-13",
"endOfSeason": "2025-11-29",
"startOfLiturgicalYear": "2024-12-01",
"endOfLiturgicalYear": "2025-11-29",
"seasons": [
"ORDINARY_TIME"
]
},
"cycles": {
"properCycle": "PROPER_OF_TIME",
"sundayCycle": "YEAR_C",
"weekdayCycle": "YEAR_1",
"psalterWeek": "WEEK_4"
},
"fromCalendarId": "ProperOfTime",
"fromExtendedCalendars": []
},
{
"id": "casimir_of_poland",
"date": "2025-03-04",
"dateDef": {
"month": 3,
"date": 4
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "OPTIONAL_MEMORIAL_12",
"rank": "OPTIONAL_MEMORIAL",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": true,
"i18nDef": [
"names:casimir_of_poland"
],
"seasons": [
"ORDINARY_TIME"
],
"periods": [
"EARLY_ORDINARY_TIME"
],
"colors": [
"WHITE"
],
"commonsDef": [
"Saints"
],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 8,
"dayOfSeason": 51,
"dayOfWeek": 2,
"nthDayOfWeekInMonth": 1,
"startOfSeason": "2025-01-13",
"endOfSeason": "2025-11-29",
"startOfLiturgicalYear": "2024-12-01",
"endOfLiturgicalYear": "2025-11-29",
"seasons": [
"ORDINARY_TIME"
]
},
"cycles": {
"properCycle": "PROPER_OF_SAINTS",
"sundayCycle": "YEAR_C",
"weekdayCycle": "YEAR_1",
"psalterWeek": "WEEK_4"
},
"fromCalendarId": "ma",
"fromExtendedCalendars": [],
"weekday": {
"id": "ordinary_time_8_tuesday",
"date": "2025-03-04",
"dateDef": {
"dateFn": "dateOfOrdinaryTime",
"dateArgs": [
2,
8
],
"yearOffset": 0
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "WEEKDAY_13",
"rank": "WEEKDAY",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": false,
"i18nDef": [
"seasons:ordinary_time.weekday",
{
"week": 8,
"dow": 2
}
],
"seasons": [
"ORDINARY_TIME"
],
"periods": [
"EARLY_ORDINARY_TIME"
],
"colors": [
"GREEN"
],
"commonsDef": [],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 8,
"dayOfSeason": 51,
"dayOfWeek": 2,
"nthDayOfWeekInMonth": 1,
"startOfSeason": "2025-01-13",
"endOfSeason": "2025-11-29",
"startOfLiturgicalYear": "2024-12-01",
"endOfLiturgicalYear": "2025-11-29",
"seasons": [
"ORDINARY_TIME"
]
},
"cycles": {
"properCycle": "PROPER_OF_TIME",
"sundayCycle": "YEAR_C",
"weekdayCycle": "YEAR_1",
"psalterWeek": "WEEK_4"
},
"fromCalendarId": "ProperOfTime",
"fromExtendedCalendars": []
}
}
],
"2025-03-05": [
{
"id": "ash_wednesday",
"date": "2025-03-05",
"dateDef": {
"dateFn": "ashWednesday",
"yearOffset": 0
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "ASH_WEDNESDAY_2",
"rank": "WEEKDAY",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": false,
"i18nDef": [
"names:ash_wednesday"
],
"seasons": [
"LENT"
],
"periods": [
"PRESENTATION_OF_THE_LORD_TO_HOLY_THURSDAY"
],
"colors": [
"PURPLE"
],
"commonsDef": [],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 0,
"dayOfSeason": 1,
"dayOfWeek": 3,
"nthDayOfWeekInMonth": 1,
"startOfSeason": "2025-03-05",
"endOfSeason": "2025-04-17",
"startOfLiturgicalYear": "2024-12-01",
"endOfLiturgicalYear": "2025-11-29",
"seasons": [
"LENT"
]
},
"cycles": {
"properCycle": "PROPER_OF_TIME",
"sundayCycle": "YEAR_C",
"weekdayCycle": "YEAR_1",
"psalterWeek": "WEEK_4"
},
"fromCalendarId": "ProperOfTime",
"fromExtendedCalendars": []
}
],
"2025-03-06": [
{
"id": "thursday_after_ash_wednesday",
"date": "2025-03-06",
"dateDef": {
"dateFn": "ashWednesday",
"addDay": 1,
"yearOffset": 0
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "PRIVILEGED_WEEKDAY_9",
"rank": "WEEKDAY",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": false,
"i18nDef": [
"seasons:lent.day_after_ash_wed",
{
"dow": 4
}
],
"seasons": [
"LENT"
],
"periods": [
"PRESENTATION_OF_THE_LORD_TO_HOLY_THURSDAY"
],
"colors": [
"PURPLE"
],
"commonsDef": [],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 0,
"dayOfSeason": 2,
"dayOfWeek": 4,
"nthDayOfWeekInMonth": 1,
"startOfSeason": "2025-03-05",
"endOfSeason": "2025-04-17",
"startOfLiturgicalYear": "2024-12-01",
"endOfLiturgicalYear": "2025-11-29",
"seasons": [
"LENT"
]
},
"cycles": {
"properCycle": "PROPER_OF_TIME",
"sundayCycle": "YEAR_C",
"weekdayCycle": "YEAR_1",
"psalterWeek": "WEEK_4"
},
"fromCalendarId": "ProperOfTime",
"fromExtendedCalendars": []
}
],
"2025-03-07": [
{
"id": "friday_after_ash_wednesday",
"date": "2025-03-07",
"dateDef": {
"dateFn": "ashWednesday",
"addDay": 2,
"yearOffset": 0
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "PRIVILEGED_WEEKDAY_9",
"rank": "WEEKDAY",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": false,
"i18nDef": [
"seasons:lent.day_after_ash_wed",
{
"dow": 5
}
],
"seasons": [
"LENT"
],
"periods": [
"PRESENTATION_OF_THE_LORD_TO_HOLY_THURSDAY"
],
"colors": [
"PURPLE"
],
"commonsDef": [],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 0,
"dayOfSeason": 3,
"dayOfWeek": 5,
"nthDayOfWeekInMonth": 1,
"startOfSeason": "2025-03-05",
"endOfSeason": "2025-04-17",
"startOfLiturgicalYear": "2024-12-01",
"endOfLiturgicalYear": "2025-11-29",
"seasons": [
"LENT"
]
},
"cycles": {
"properCycle": "PROPER_OF_TIME",
"sundayCycle": "YEAR_C",
"weekdayCycle": "YEAR_1",
"psalterWeek": "WEEK_4"
},
"fromCalendarId": "ProperOfTime",
"fromExtendedCalendars": []
},
{
"id": "perpetua_of_carthage_and_felicity_of_carthage_martyrs",
"date": "2025-03-07",
"dateDef": {
"month": 3,
"date": 7
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "GENERAL_MEMORIAL_10",
"rank": "MEMORIAL",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": true,
"i18nDef": [
"names:perpetua_of_carthage_and_felicity_of_carthage_martyrs"
],
"seasons": [
"LENT"
],
"periods": [
"PRESENTATION_OF_THE_LORD_TO_HOLY_THURSDAY"
],
"colors": [],
"commonsDef": [
"None"
],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 0,
"dayOfSeason": 3,
"dayOfWeek": 5,
"nthDayOfWeekInMonth": 1,
"startOfSeason": "2025-03-05",
"endOfSeason": "2025-04-17",
"startOfLiturgicalYear": "2024-12-01",
"endOfLiturgicalYear": "2025-11-29",
"seasons": [
"LENT"
]
},
"cycles": {
"properCycle": "PROPER_OF_SAINTS",
"sundayCycle": "YEAR_C",
"weekdayCycle": "YEAR_1",
"psalterWeek": "WEEK_4"
},
"fromCalendarId": "ma",
"fromExtendedCalendars": [],
"weekday": {
"id": "friday_after_ash_wednesday",
"date": "2025-03-07",
"dateDef": {
"dateFn": "ashWednesday",
"addDay": 2,
"yearOffset": 0
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "PRIVILEGED_WEEKDAY_9",
"rank": "WEEKDAY",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": false,
"i18nDef": [
"seasons:lent.day_after_ash_wed",
{
"dow": 5
}
],
"seasons": [
"LENT"
],
"periods": [
"PRESENTATION_OF_THE_LORD_TO_HOLY_THURSDAY"
],
"colors": [
"PURPLE"
],
"commonsDef": [],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 0,
"dayOfSeason": 3,
"dayOfWeek": 5,
"nthDayOfWeekInMonth": 1,
"startOfSeason": "2025-03-05",
"endOfSeason": "2025-04-17",
"startOfLiturgicalYear": "2024-12-01",
"endOfLiturgicalYear": "2025-11-29",
"seasons": [
"LENT"
]
},
"cycles": {
"properCycle": "PROPER_OF_TIME",
"sundayCycle": "YEAR_C",
"weekdayCycle": "YEAR_1",
"psalterWeek": "WEEK_4"
},
"fromCalendarId": "ProperOfTime",
"fromExtendedCalendars": []
}
}
],
"2025-03-08": [
{
"id": "saturday_after_ash_wednesday",
"date": "2025-03-08",
"dateDef": {
"dateFn": "ashWednesday",
"addDay": 3,
"yearOffset": 0
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "PRIVILEGED_WEEKDAY_9",
"rank": "WEEKDAY",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": false,
"i18nDef": [
"seasons:lent.day_after_ash_wed",
{
"dow": 6
}
],
"seasons": [
"LENT"
],
"periods": [
"PRESENTATION_OF_THE_LORD_TO_HOLY_THURSDAY"
],
"colors": [
"PURPLE"
],
"commonsDef": [],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 0,
"dayOfSeason": 4,
"dayOfWeek": 6,
"nthDayOfWeekInMonth": 2,
"startOfSeason": "2025-03-05",
"endOfSeason": "2025-04-17",
"startOfLiturgicalYear": "2024-12-01",
"endOfLiturgicalYear": "2025-11-29",
"seasons": [
"LENT"
]
},
"cycles": {
"properCycle": "PROPER_OF_TIME",
"sundayCycle": "YEAR_C",
"weekdayCycle": "YEAR_1",
"psalterWeek": "WEEK_4"
},
"fromCalendarId": "ProperOfTime",
"fromExtendedCalendars": []
},
{
"id": "john_of_god_duarte_cidade_religious",
"date": "2025-03-08",
"dateDef": {
"month": 3,
"date": 8
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "OPTIONAL_MEMORIAL_12",
"rank": "OPTIONAL_MEMORIAL",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": true,
"i18nDef": [
"names:john_of_god_duarte_cidade_religious"
],
"seasons": [
"LENT"
],
"periods": [
"PRESENTATION_OF_THE_LORD_TO_HOLY_THURSDAY"
],
"colors": [],
"commonsDef": [
"Religious",
"MercyWorkers"
],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 0,
"dayOfSeason": 4,
"dayOfWeek": 6,
"nthDayOfWeekInMonth": 2,
"startOfSeason": "2025-03-05",
"endOfSeason": "2025-04-17",
"startOfLiturgicalYear": "2024-12-01",
"endOfLiturgicalYear": "2025-11-29",
"seasons": [
"LENT"
]
},
"cycles": {
"properCycle": "PROPER_OF_SAINTS",
"sundayCycle": "YEAR_C",
"weekdayCycle": "YEAR_1",
"psalterWeek": "WEEK_4"
},
"fromCalendarId": "ma",
"fromExtendedCalendars": [],
"weekday": {
"id": "saturday_after_ash_wednesday",
"date": "2025-03-08",
"dateDef": {
"dateFn": "ashWednesday",
"addDay": 3,
"yearOffset": 0
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "PRIVILEGED_WEEKDAY_9",
"rank": "WEEKDAY",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": false,
"i18nDef": [
"seasons:lent.day_after_ash_wed",
{
"dow": 6
}
],
"seasons": [
"LENT"
],
"periods": [
"PRESENTATION_OF_THE_LORD_TO_HOLY_THURSDAY"
],
"colors": [
"PURPLE"
],
"commonsDef": [],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 0,
"dayOfSeason": 4,
"dayOfWeek": 6,
"nthDayOfWeekInMonth": 2,
"startOfSeason": "2025-03-05",
"endOfSeason": "2025-04-17",
"startOfLiturgicalYear": "2024-12-01",
"endOfLiturgicalYear": "2025-11-29",
"seasons": [
"LENT"
]
},
"cycles": {
"properCycle": "PROPER_OF_TIME",
"sundayCycle": "YEAR_C",
"weekdayCycle": "YEAR_1",
"psalterWeek": "WEEK_4"
},
"fromCalendarId": "ProperOfTime",
"fromExtendedCalendars": []
}
}
],
"2025-03-09": [
{
"id": "lent_1_sunday",
"date": "2025-03-09",
"dateDef": {
"dateFn": "ashWednesday",
"addDay": 4,
"yearOffset": 0
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "PRIVILEGED_SUNDAY_2",
"rank": "SUNDAY",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": true,
"isOptional": false,
"i18nDef": [
"seasons:lent.sunday",
{
"week": 1
}
],
"seasons": [
"LENT"
],
"periods": [
"PRESENTATION_OF_THE_LORD_TO_HOLY_THURSDAY"
],
"colors": [
"PURPLE"
],
"commonsDef": [],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 1,
"dayOfSeason": 5,
"dayOfWeek": 0,
"nthDayOfWeekInMonth": 2,
"startOfSeason": "2025-03-05",
"endOfSeason": "2025-04-17",
"startOfLiturgicalYear": "2024-12-01",
"endOfLiturgicalYear": "2025-11-29",
"seasons": [
"LENT"
]
},
"cycles": {
"properCycle": "PROPER_OF_TIME",
"sundayCycle": "YEAR_C",
"weekdayCycle": "YEAR_1",
"psalterWeek": "WEEK_1"
},
"fromCalendarId": "ProperOfTime",
"fromExtendedCalendars": []
}
],
"2025-03-10": [
{
"id": "lent_1_monday",
"date": "2025-03-10",
"dateDef": {
"dateFn": "ashWednesday",
"addDay": 5,
"yearOffset": 0
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "PRIVILEGED_WEEKDAY_9",
"rank": "WEEKDAY",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": false,
"i18nDef": [
"seasons:lent.weekday",
{
"week": 1,
"dow": 1
}
],
"seasons": [
"LENT"
],
"periods": [
"PRESENTATION_OF_THE_LORD_TO_HOLY_THURSDAY"
],
"colors": [
"PURPLE"
],
"commonsDef": [],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 1,
"dayOfSeason": 6,
"dayOfWeek": 1,
"nthDayOfWeekInMonth": 2,
"startOfSeason": "2025-03-05",
"endOfSeason": "2025-04-17",
"startOfLiturgicalYear": "2024-12-01",
"endOfLiturgicalYear": "2025-11-29",
"seasons": [
"LENT"
]
},
"cycles": {
"properCycle": "PROPER_OF_TIME",
"sundayCycle": "YEAR_C",
"weekdayCycle": "YEAR_1",
"psalterWeek": "WEEK_1"
},
"fromCalendarId": "ProperOfTime",
"fromExtendedCalendars": []
}
],
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"fromExtendedCalendars": []
}
],
"2025-03-23": [
{
"id": "lent_3_sunday",
"date": "2025-03-23",
"dateDef": {
"dateFn": "ashWednesday",
"addDay": 18,
"yearOffset": 0
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "PRIVILEGED_SUNDAY_2",
"rank": "SUNDAY",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": true,
"isOptional": false,
"i18nDef": [
"seasons:lent.sunday",
{
"week": 3
}
],
"seasons": [
"LENT"
],
"periods": [
"PRESENTATION_OF_THE_LORD_TO_HOLY_THURSDAY"
],
"colors": [
"PURPLE"
],
"commonsDef": [],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 3,
"dayOfSeason": 19,
"dayOfWeek": 0,
"nthDayOfWeekInMonth": 4,
"startOfSeason": "2025-03-05",
"endOfSeason": "2025-04-17",
"startOfLiturgicalYear": "2024-12-01",
"endOfLiturgicalYear": "2025-11-29",
"seasons": [
"LENT"
]
},
"cycles": {
"properCycle": "PROPER_OF_TIME",
"sundayCycle": "YEAR_C",
"weekdayCycle": "YEAR_1",
"psalterWeek": "WEEK_3"
},
"fromCalendarId": "ProperOfTime",
"fromExtendedCalendars": []
}
],
"2025-03-24": [
{
"id": "lent_3_monday",
"date": "2025-03-24",
"dateDef": {
"dateFn": "ashWednesday",
"addDay": 19,
"yearOffset": 0
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "PRIVILEGED_WEEKDAY_9",
"rank": "WEEKDAY",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": false,
"i18nDef": [
"seasons:lent.weekday",
{
"week": 3,
"dow": 1
}
],
"seasons": [
"LENT"
],
"periods": [
"PRESENTATION_OF_THE_LORD_TO_HOLY_THURSDAY"
],
"colors": [
"PURPLE"
],
"commonsDef": [],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 3,
"dayOfSeason": 20,
"dayOfWeek": 1,
"nthDayOfWeekInMonth": 4,
"startOfSeason": "2025-03-05",
"endOfSeason": "2025-04-17",
"startOfLiturgicalYear": "2024-12-01",
"endOfLiturgicalYear": "2025-11-29",
"seasons": [
"LENT"
]
},
"cycles": {
"properCycle": "PROPER_OF_TIME",
"sundayCycle": "YEAR_C",
"weekdayCycle": "YEAR_1",
"psalterWeek": "WEEK_3"
},
"fromCalendarId": "ProperOfTime",
"fromExtendedCalendars": []
}
],
"2025-03-25": [
{
"id": "annunciation_of_the_lord",
"date": "2025-03-25",
"dateDef": {
"dateFn": "annunciation"
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "GENERAL_SOLEMNITY_3",
"rank": "SOLEMNITY",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": false,
"i18nDef": [
"names:annunciation_of_the_lord"
],
"seasons": [
"LENT"
],
"periods": [
"PRESENTATION_OF_THE_LORD_TO_HOLY_THURSDAY"
],
"colors": [
"WHITE"
],
"commonsDef": [
"None"
],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 3,
"dayOfSeason": 21,
"dayOfWeek": 2,
"nthDayOfWeekInMonth": 4,
"startOfSeason": "2025-03-05",
"endOfSeason": "2025-04-17",
"startOfLiturgicalYear": "2024-12-01",
"endOfLiturgicalYear": "2025-11-29",
"seasons": [
"LENT"
]
},
"cycles": {
"properCycle": "PROPER_OF_SAINTS",
"sundayCycle": "YEAR_C",
"weekdayCycle": "YEAR_1",
"psalterWeek": "WEEK_3"
},
"fromCalendarId": "ma",
"fromExtendedCalendars": []
}
],
"2025-03-26": [
{
"id": "lent_3_wednesday",
"date": "2025-03-26",
"dateDef": {
"dateFn": "ashWednesday",
"addDay": 21,
"yearOffset": 0
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "PRIVILEGED_WEEKDAY_9",
"rank": "WEEKDAY",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": false,
"i18nDef": [
"seasons:lent.weekday",
{
"week": 3,
"dow": 3
}
],
"seasons": [
"LENT"
],
"periods": [
"PRESENTATION_OF_THE_LORD_TO_HOLY_THURSDAY"
],
"colors": [
"PURPLE"
],
"commonsDef": [],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 3,
"dayOfSeason": 22,
"dayOfWeek": 3,
"nthDayOfWeekInMonth": 4,
"startOfSeason": "2025-03-05",
"endOfSeason": "2025-04-17",
"startOfLiturgicalYear": "2024-12-01",
"endOfLiturgicalYear": "2025-11-29",
"seasons": [
"LENT"
]
},
"cycles": {
"properCycle": "PROPER_OF_TIME",
"sundayCycle": "YEAR_C",
"weekdayCycle": "YEAR_1",
"psalterWeek": "WEEK_3"
},
"fromCalendarId": "ProperOfTime",
"fromExtendedCalendars": []
}
],
"2025-03-27": [
{
"id": "lent_3_thursday",
"date": "2025-03-27",
"dateDef": {
"dateFn": "ashWednesday",
"addDay": 22,
"yearOffset": 0
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "PRIVILEGED_WEEKDAY_9",
"rank": "WEEKDAY",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": false,
"i18nDef": [
"seasons:lent.weekday",
{
"week": 3,
"dow": 4
}
],
"seasons": [
"LENT"
],
"periods": [
"PRESENTATION_OF_THE_LORD_TO_HOLY_THURSDAY"
],
"colors": [
"PURPLE"
],
"commonsDef": [],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 3,
"dayOfSeason": 23,
"dayOfWeek": 4,
"nthDayOfWeekInMonth": 4,
"startOfSeason": "2025-03-05",
"endOfSeason": "2025-04-17",
"startOfLiturgicalYear": "2024-12-01",
"endOfLiturgicalYear": "2025-11-29",
"seasons": [
"LENT"
]
},
"cycles": {
"properCycle": "PROPER_OF_TIME",
"sundayCycle": "YEAR_C",
"weekdayCycle": "YEAR_1",
"psalterWeek": "WEEK_3"
},
"fromCalendarId": "ProperOfTime",
"fromExtendedCalendars": []
}
],
"2025-03-28": [
{
"id": "lent_3_friday",
"date": "2025-03-28",
"dateDef": {
"dateFn": "ashWednesday",
"addDay": 23,
"yearOffset": 0
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "PRIVILEGED_WEEKDAY_9",
"rank": "WEEKDAY",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": false,
"i18nDef": [
"seasons:lent.weekday",
{
"week": 3,
"dow": 5
}
],
"seasons": [
"LENT"
],
"periods": [
"PRESENTATION_OF_THE_LORD_TO_HOLY_THURSDAY"
],
"colors": [
"PURPLE"
],
"commonsDef": [],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 3,
"dayOfSeason": 24,
"dayOfWeek": 5,
"nthDayOfWeekInMonth": 4,
"startOfSeason": "2025-03-05",
"endOfSeason": "2025-04-17",
"startOfLiturgicalYear": "2024-12-01",
"endOfLiturgicalYear": "2025-11-29",
"seasons": [
"LENT"
]
},
"cycles": {
"properCycle": "PROPER_OF_TIME",
"sundayCycle": "YEAR_C",
"weekdayCycle": "YEAR_1",
"psalterWeek": "WEEK_3"
},
"fromCalendarId": "ProperOfTime",
"fromExtendedCalendars": []
}
],
"2025-03-29": [
{
"id": "lent_3_saturday",
"date": "2025-03-29",
"dateDef": {
"dateFn": "ashWednesday",
"addDay": 24,
"yearOffset": 0
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "PRIVILEGED_WEEKDAY_9",
"rank": "WEEKDAY",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": false,
"i18nDef": [
"seasons:lent.weekday",
{
"week": 3,
"dow": 6
}
],
"seasons": [
"LENT"
],
"periods": [
"PRESENTATION_OF_THE_LORD_TO_HOLY_THURSDAY"
],
"colors": [
"PURPLE"
],
"commonsDef": [],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 3,
"dayOfSeason": 25,
"dayOfWeek": 6,
"nthDayOfWeekInMonth": 5,
"startOfSeason": "2025-03-05",
"endOfSeason": "2025-04-17",
"startOfLiturgicalYear": "2024-12-01",
"endOfLiturgicalYear": "2025-11-29",
"seasons": [
"LENT"
]
},
"cycles": {
"properCycle": "PROPER_OF_TIME",
"sundayCycle": "YEAR_C",
"weekdayCycle": "YEAR_1",
"psalterWeek": "WEEK_3"
},
"fromCalendarId": "ProperOfTime",
"fromExtendedCalendars": []
}
],
"2025-03-30": [
{
"id": "lent_4_sunday",
"date": "2025-03-30",
"dateDef": {
"dateFn": "ashWednesday",
"addDay": 25,
"yearOffset": 0
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "PRIVILEGED_SUNDAY_2",
"rank": "SUNDAY",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": true,
"isOptional": false,
"i18nDef": [
"seasons:lent.sunday",
{
"week": 4
}
],
"seasons": [
"LENT"
],
"periods": [
"PRESENTATION_OF_THE_LORD_TO_HOLY_THURSDAY"
],
"colors": [
"ROSE",
"PURPLE"
],
"commonsDef": [],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 4,
"dayOfSeason": 26,
"dayOfWeek": 0,
"nthDayOfWeekInMonth": 5,
"startOfSeason": "2025-03-05",
"endOfSeason": "2025-04-17",
"startOfLiturgicalYear": "2024-12-01",
"endOfLiturgicalYear": "2025-11-29",
"seasons": [
"LENT"
]
},
"cycles": {
"properCycle": "PROPER_OF_TIME",
"sundayCycle": "YEAR_C",
"weekdayCycle": "YEAR_1",
"psalterWeek": "WEEK_4"
},
"fromCalendarId": "ProperOfTime",
"fromExtendedCalendars": []
}
],
"2025-03-31": [
{
"id": "lent_4_monday",
"date": "2025-03-31",
"dateDef": {
"dateFn": "ashWednesday",
"addDay": 26,
"yearOffset": 0
},
"dateExceptions": [],
"alternativeTransferDateDefs": [],
"precedence": "PRIVILEGED_WEEKDAY_9",
"rank": "WEEKDAY",
"allowSimilarRankItems": false,
"isHolyDayOfObligation": false,
"isOptional": false,
"i18nDef": [
"seasons:lent.weekday",
{
"week": 4,
"dow": 1
}
],
"seasons": [
"LENT"
],
"periods": [
"PRESENTATION_OF_THE_LORD_TO_HOLY_THURSDAY"
],
"colors": [
"PURPLE"
],
"commonsDef": [],
"martyrology": [],
"titles": [],
"calendar": {
"weekOfSeason": 4,
"dayOfSeason": 27,
"dayOfWeek": 1,
"nthDayOfWeekInMonth": 5,
"startOfSeason": "2025-03-05",
"endOfSeason": "2025-04-17",
"startOfLiturgicalYear": "2024-12-01",
"endOfLiturgicalYear": "2025-11-29",
"seasons": [
"LENT"
]
},
"cycles": {
"properCycle": "PROPER_OF_TIME",
"sundayCycle": "YEAR_C",
"weekdayCycle": "YEAR_1",
"psalterWeek": "WEEK_4"
},
"fromCalendarId": "ProperOfTime",
"fromExtendedCalendars": []
}
]
}
}Multiple Access Methods
REST API with multiple response formats plus GraphQL support
JSON
JavaScript Object Notation
XML
Extensible Markup Language
YAML
Human-readable data format
BETA
GraphQL
Query language for APIs
GraphQL Support
Access most of our API library through our unified GraphQL interface. Query multiple APIs in a single request with flexible field selection.Learn more about GraphQL →
Developer SDKs
Skip the HTTP calls. Use our official packages
Integrate faster with type-safe SDKs and comprehensive documentation
Need a different language?Our REST API works with any programming language. Examples available for PHP, Ruby, Go, and more.
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Frequently Asked Questions
Get answers to common questions about the Liturgical Calendar
How do I get started with this API?
Getting started is simple! Sign up for a free account, get your API key, and start making requests to our REST endpoints. We provide comprehensive documentation and code examples to help you integrate quickly.
What response formats are supported?
We support JSON (default), XML, and YAML response formats. Simply add the format parameter to your request with values 'json', 'xml', or 'yaml'. All formats contain the same comprehensive data.
Are there usage limits on the free tier?
The free tier includes 50 tokens per month with a rate limit of 10 requests per minute. Pro plans offer higher limits and enterprise plans provide unlimited usage with priority support.
How do I authenticate API requests?
Include your API key in the request header as X-API-Key: your_key_here or as a query parameter ?key=your_key. All requests are made over HTTPS for security.
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