{
"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"
}
]
}
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'
{
"input": {
"calendar": "hebrew",
"year": 5787,
"month": "Nisan",
"day": 15
},
"gregorianDate": "2027-04-22",
"weekday": "Thursday"
}
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'
{
"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"
}
]
}
}
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'
{
"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)"
}
]
}
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'
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.
| Header | Description |
|---|---|
Authorization
|
Required
Should be Bearer access_key. See "Your API Access Key" above when you are subscribed.
|
No long-term commitment. Upgrade, downgrade, or cancel anytime. Free Trial includes up to 50 requests.
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.
To obtain your API key, first sign in to your account and navigate to the API you want to use. From the API's Pricing section, choose a plan and complete the subscription process. Once subscribed, return to the API page and you will see your API Access Key displayed at the top of the documentation page. You can use this key to authenticate your requests.
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