World Calendar Converter API - Islamic Hebrew Chinese

API ID 14241

Convert dates between 13 calendars and get Islamic, Jewish, Chinese and Persian holiday dates (Ramadan, Eid, Passover, Chinese New Year, Nowruz) for 1900-2100.

API Documentation

Endpoints

Request
Gregorian date in all calendars. Convert dates between 13 calendars (Gregorian, Islamic Umm al-Qura and tabular, Hebrew, Persian, Chinese, Korean, Japanese, Buddhist, Indian, Coptic, Ethiopian, Minguo) and get the dates of Islamic, Jewish, Chinese and Persian holidays for any year 1900-2100.
Endpoint ID: 35351
GET https://zylalabs.com/api/14241/world+calendar+converter+api+-+islamic+hebrew+chinese/35351/gregorian+date+in+all+calendars
INPUT PARAMETERS

Gregorian date in all calendars — Endpoint Features

Object Description
date Optional Gregorian date YYYY-MM-DD (default: today)
calendars Optional Optional comma list of calendar ids

Free test requests remaining: 3 of 3.


INPUT PARAMETERS

date
calendars
API EXAMPLE RESPONSE
JSON
{
    "gregorianDate": "2026-10-12",
    "weekday": "Monday",
    "calendars": [
        {
            "calendar": "hebrew",
            "name": "Hebrew",
            "year": 5787,
            "month": "Heshvan",
            "monthName": "Heshvan",
            "day": 1,
            "era": "AM",
            "formatted": "1 Heshvan 5787 AM"
        },
        {
            "calendar": "islamic-umalqura",
            "name": "Islamic (Umm al-Qura)",
            "year": 1448,
            "month": 5,
            "monthName": "Jumada I",
            "day": 1,
            "era": "AH",
            "formatted": "Jumada I 1, 1448 AH"
        },
        {
            "calendar": "persian",
            "name": "Persian (Solar Hijri)",
            "year": 1405,
            "month": 7,
            "monthName": "Mehr",
            "day": 20,
            "era": "AP",
            "formatted": "Mehr 20, 1405 AP"
        }
    ]
}
Gregorian date in all calendars — CODE SNIPPETS

curl --location --request GET 'https://zylalabs.com/api/14241/world+calendar+converter+api+-+islamic+hebrew+chinese/35351/gregorian+date+in+all+calendars?date=2026-10-12&calendars=hebrew,islamic-umalqura,persian' --header 'Authorization: Bearer YOUR_API_KEY' 


    
Request
Any calendar date to Gregorian. Convert dates between 13 calendars (Gregorian, Islamic Umm al-Qura and tabular, Hebrew, Persian, Chinese, Korean, Japanese, Buddhist, Indian, Coptic, Ethiopian, Minguo) and get the dates of Islamic, Jewish, Chinese and Persian holidays for any year 1900-2100.
Endpoint ID: 35352
GET https://zylalabs.com/api/14241/world+calendar+converter+api+-+islamic+hebrew+chinese/35352/any+calendar+date+to+gregorian
INPUT PARAMETERS

Any calendar date to Gregorian — Endpoint Features

Object Description
calendar Required Calendar id
year Required Year in that calendar
month Required Month number (Hebrew: name, e.g. Nisan)
day Required Day of month

Free test requests remaining: 3 of 3.


INPUT PARAMETERS

calendar
year
month
day
API EXAMPLE RESPONSE
JSON
{
    "input": {
        "calendar": "hebrew",
        "year": 5787,
        "month": "Nisan",
        "day": 15
    },
    "gregorianDate": "2027-04-22",
    "weekday": "Thursday"
}
Any calendar date to Gregorian — CODE SNIPPETS

curl --location --request GET 'https://zylalabs.com/api/14241/world+calendar+converter+api+-+islamic+hebrew+chinese/35352/any+calendar+date+to+gregorian?calendar=hebrew&year=5787&month=Nisan&day=15' --header 'Authorization: Bearer YOUR_API_KEY' 


    
Request
Religious and cultural holidays. Convert dates between 13 calendars (Gregorian, Islamic Umm al-Qura and tabular, Hebrew, Persian, Chinese, Korean, Japanese, Buddhist, Indian, Coptic, Ethiopian, Minguo) and get the dates of Islamic, Jewish, Chinese and Persian holidays for any year 1900-2100.
Endpoint ID: 35353
GET https://zylalabs.com/api/14241/world+calendar+converter+api+-+islamic+hebrew+chinese/35353/religious+and+cultural+holidays
INPUT PARAMETERS

Religious and cultural holidays — Endpoint Features

Object Description
year Required Gregorian year 1900-2100
type Optional all, islamic, jewish, chinese or persian

Free test requests remaining: 3 of 3.


INPUT PARAMETERS

year
type
API EXAMPLE RESPONSE
JSON
{
    "year": 2027,
    "islamic": {
        "calendar": "islamic-umalqura",
        "note": "Umm al-Qura calendar (Saudi Arabia). Dates in other countries may differ by a day depending on moon sighting; Islamic days begin at sunset the evening before.",
        "events": [
            {
                "name": "Isra and Miraj",
                "date": "2027-01-05",
                "weekday": "Tuesday",
                "local": "Rajab 27, 1448 AH"
            },
            {
                "name": "Ramadan begins",
                "date": "2027-02-08",
                "weekday": "Monday",
                "local": "Ramadan 1, 1448 AH"
            },
            {
                "name": "Laylat al-Qadr",
                "date": "2027-03-06",
                "weekday": "Saturday",
                "local": "Ramadan 27, 1448 AH"
            },
            {
                "name": "Eid al-Fitr",
                "date": "2027-03-09",
                "weekday": "Tuesday",
                "local": "Shawwal 1, 1448 AH"
            },
            {
                "name": "Day of Arafah",
                "date": "2027-05-15",
                "weekday": "Saturday",
                "local": "Dhuʻl-Hijjah 9, 1448 AH"
            },
            {
                "name": "Eid al-Adha",
                "date": "2027-05-16",
                "weekday": "Sunday",
                "local": "Dhuʻl-Hijjah 10, 1448 AH"
            },
            {
                "name": "Islamic New Year",
                "date": "2027-06-06",
                "weekday": "Sunday",
                "local": "Muharram 1, 1449 AH"
            },
            {
                "name": "Ashura",
                "date": "2027-06-15",
                "weekday": "Tuesday",
                "local": "Muharram 10, 1449 AH"
            },
            {
                "name": "Mawlid al-Nabi",
                "date": "2027-08-14",
                "weekday": "Saturday",
                "local": "Rabiʻ I 12, 1449 AH"
            },
            {
                "name": "Isra and Miraj",
                "date": "2027-12-25",
                "weekday": "Saturday",
                "local": "Rajab 27, 1449 AH"
            }
        ]
    },
    "jewish": {
        "calendar": "hebrew",
        "note": "Jewish holidays begin at sunset on the evening before the listed date.",
        "events": [
            {
                "name": "Tu BiShvat",
                "date": "2027-01-23",
                "weekday": "Saturday",
                "local": "15 Shevat 5787"
            },
            {
                "name": "Purim",
                "date": "2027-03-23",
                "weekday": "Tuesday",
                "local": "14 Adar II 5787"
            },
            {
                "name": "Passover",
                "date": "2027-04-22",
                "weekday": "Thursday",
                "local": "15 Nisan 5787"
            },
            {
                "name": "Shavuot",
                "date": "2027-06-11",
                "weekday": "Friday",
                "local": "6 Sivan 5787"
            },
            {
                "name": "Tisha B'Av",
                "date": "2027-08-12",
                "weekday": "Thursday",
                "local": "9 Av 5787"
            },
            {
                "name": "Rosh Hashanah",
                "date": "2027-10-02",
                "weekday": "Saturday",
                "local": "1 Tishri 5788"
            },
            {
                "name": "Yom Kippur",
                "date": "2027-10-11",
                "weekday": "Monday",
                "local": "10 Tishri 5788"
            },
            {
                "name": "Sukkot",
                "date": "2027-10-16",
                "weekday": "Saturday",
                "local": "15 Tishri 5788"
            },
            {
                "name": "Shemini Atzeret",
                "date": "2027-10-23",
                "weekday": "Saturday",
                "local": "22 Tishri 5788"
            },
            {
                "name": "Simchat Torah (diaspora)",
                "date": "2027-10-24",
                "weekday": "Sunday",
                "local": "23 Tishri 5788"
            },
            {
                "name": "Hanukkah",
                "date": "2027-12-25",
                "weekday": "Saturday",
                "local": "25 Kislev 5788"
            }
        ]
    },
    "chinese": {
        "calendar": "chinese",
        "note": "Traditional Chinese lunisolar calendar (China Standard Time). Month starts are verified against precise astronomical new moons.",
        "events": [
            {
                "name": "Chinese New Year (Spring Festival)",
                "date": "2027-02-06",
                "weekday": "Saturday",
                "local": "Twelfth Month 30, 2026(bing-wu)"
            },
            {
                "name": "Lantern Festival",
                "date": "2027-02-20",
                "weekday": "Saturday",
                "local": "First Month 14, 2027(ding-wei)"
            },
            {
                "name": "Dragon Boat Festival",
                "date": "2027-06-09",
                "weekday": "Wednesday",
                "local": "Fifth Month 5, 2027(ding-wei)"
            },
            {
                "name": "Qixi Festival",
                "date": "2027-08-08",
                "weekday": "Sunday",
                "local": "Seventh Month 7, 2027(ding-wei)"
            },
            {
                "name": "Mid-Autumn Festival",
                "date": "2027-09-15",
                "weekday": "Wednesday",
                "local": "Eighth Month 15, 2027(ding-wei)"
            },
            {
                "name": "Double Ninth Festival",
                "date": "2027-10-08",
                "weekday": "Friday",
                "local": "Ninth Month 9, 2027(ding-wei)"
            }
        ]
    },
    "persian": {
        "calendar": "persian",
        "note": "Solar Hijri calendar.",
        "events": [
            {
                "name": "Nowruz (Persian New Year)",
                "date": "2027-03-21",
                "weekday": "Sunday",
                "local": "Farvardin 1, 1406 AP"
            },
            {
                "name": "Sizdah Bedar",
                "date": "2027-04-02",
                "weekday": "Friday",
                "local": "Farvardin 13, 1406 AP"
            }
        ]
    }
}
Religious and cultural holidays — CODE SNIPPETS

curl --location --request GET 'https://zylalabs.com/api/14241/world+calendar+converter+api+-+islamic+hebrew+chinese/35353/religious+and+cultural+holidays?year=2027&type=all' --header 'Authorization: Bearer YOUR_API_KEY' 


    
Request
Supported calendars. Convert dates between 13 calendars (Gregorian, Islamic Umm al-Qura and tabular, Hebrew, Persian, Chinese, Korean, Japanese, Buddhist, Indian, Coptic, Ethiopian, Minguo) and get the dates of Islamic, Jewish, Chinese and Persian holidays for any year 1900-2100.
Endpoint ID: 35354
GET https://zylalabs.com/api/14241/world+calendar+converter+api+-+islamic+hebrew+chinese/35354/supported+calendars
INPUT PARAMETERS

Free test requests remaining: 3 of 3.

This endpoint does not require any input parameters.

API EXAMPLE RESPONSE
JSON
{
    "calendars": [
        {
            "id": "gregorian",
            "name": "Gregorian"
        },
        {
            "id": "islamic-umalqura",
            "name": "Islamic (Umm al-Qura)"
        },
        {
            "id": "islamic-civil",
            "name": "Islamic (tabular)"
        },
        {
            "id": "hebrew",
            "name": "Hebrew"
        },
        {
            "id": "persian",
            "name": "Persian (Solar Hijri)"
        },
        {
            "id": "chinese",
            "name": "Chinese"
        },
        {
            "id": "dangi",
            "name": "Korean (Dangi)"
        },
        {
            "id": "japanese",
            "name": "Japanese"
        },
        {
            "id": "buddhist",
            "name": "Buddhist (Thai)"
        },
        {
            "id": "indian",
            "name": "Indian National (Saka)"
        },
        {
            "id": "coptic",
            "name": "Coptic"
        },
        {
            "id": "ethiopic",
            "name": "Ethiopian"
        },
        {
            "id": "roc",
            "name": "Minguo (Taiwan)"
        }
    ]
}
Supported calendars — CODE SNIPPETS

curl --location --request GET 'https://zylalabs.com/api/14241/world+calendar+converter+api+-+islamic+hebrew+chinese/35354/supported+calendars' --header 'Authorization: Bearer YOUR_API_KEY' 


    

API Access Key & Authentication

After signing up, every developer is assigned a personal API access key, a unique combination of letters and digits provided to access to our API endpoint. To authenticate with the World Calendar Converter API - Islamic Hebrew Chinese simply include your bearer token in the Authorization header.

Headers
Header Description
Authorization Required Should be Bearer access_key. See "Your API Access Key" above when you are subscribed.

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Overview

Convert dates between 13 calendars and get Islamic, Jewish, Chinese and Persian holiday dates (Ramadan, Eid, Passover, Chinese New Year, Nowruz) for 1900-2100.

World Calendar Converter API - Islamic Hebrew Chinese FAQs

Each endpoint returns date conversions between 13 calendars, along with specific holiday dates for Islamic, Jewish, Chinese, and Persian traditions. The data includes formatted dates, weekdays, and calendar-specific details.

Key fields include "gregorianDate," "weekday," "calendars" (for the GET Gregorian date endpoint), and "events" (for the GET Religious and cultural holidays endpoint). Each calendar entry contains year, month, day, and formatted date.

Parameters include "calendar," "year," "month," and "day" for date conversions. Users can specify the calendar type and the exact date they wish to convert or retrieve holiday information for.

The response is structured as a JSON object, with main fields for the input date and converted date, along with an array of calendar objects or holiday events. Each object contains relevant details like year, month, and formatted date.

The data is derived from established calendar systems and holiday observances, ensuring accuracy through historical and astronomical references. The API maintains data quality by regularly updating its sources.

Typical use cases include planning events around religious holidays, converting dates for cultural observances, and integrating multi-calendar support in applications for diverse user bases.

Users can utilize the returned data by extracting specific calendar dates and holiday events relevant to their needs. For example, developers can display holiday dates in user interfaces or automate scheduling based on converted dates.

If results are partial or empty, users should check the input parameters for accuracy. For holidays, consider that some dates may vary by region due to lunar observations, and users should account for potential discrepancies.

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