Korean public holidays with substitute-holiday logic, plus accurate Revised Romanization of Korean text - in one fast, zero-dependency JSON API on a global edge. Check if any date is a public holiday, list a year's holidays, romanize Hangul, or get today's Korea date and holiday status. Lunar-solar conversion, the 24 solar terms and the sexagenary cycle coming in v1.1.
{
"year": 2026,
"count": 19,
"holidays": [
{
"date": "2026-01-01",
"name": "신정",
"name_en": "New Year's Day",
"substitute": false
},
{
"date": "2026-02-16",
"name": "설날 연휴",
"name_en": "Seollal Holiday",
"substitute": false
},
{
"date": "2026-02-17",
"name": "설날",
"name_en": "Seollal (Lunar New Year)",
"substitute": false
},
{
"date": "2026-02-18",
"name": "설날 연휴",
"name_en": "Seollal Holiday",
"substitute": false
},
{
"date": "2026-03-01",
"name": "삼일절",
"name_en": "Independence Movement Day",
"substitute": false
},
{
"date": "2026-03-02",
"name": "대체공휴일",
"name_en": "Substitute Holiday",
"substitute": true
},
{
"date": "2026-05-05",
"name": "어린이날",
"name_en": "Children's Day",
"substitute": false
},
{
"date": "2026-05-24",
"name": "부처님오신날",
"name_en": "Buddha's Birthday",
"substitute": false
},
{
"date": "2026-05-25",
"name": "대체공휴일",
"name_en": "Substitute Holiday",
"substitute": true
},
{
"date": "2026-06-06",
"name": "현충일",
"name_en": "Memorial Day",
"substitute": false
},
{
"date": "2026-08-15",
"name": "광복절",
"name_en": "Liberation Day",
"substitute": false
},
{
"date": "2026-08-17",
"name": "대체공휴일",
"name_en": "Substitute Holiday",
"substitute": true
},
{
"date": "2026-09-24",
"name": "추석 연휴",
"name_en": "Chuseok Holiday",
"substitute": false
},
{
"date": "2026-09-25",
"name": "추석",
"name_en": "Chuseok (Korean Thanksgiving)",
"substitute": false
},
{
"date": "2026-09-26",
"name": "추석 연휴",
"name_en": "Chuseok Holiday",
"substitute": false
},
{
"date": "2026-10-03",
"name": "개천절",
"name_en": "National Foundation Day",
"substitute": false
},
{
"date": "2026-10-05",
"name": "대체공휴일",
"name_en": "Substitute Holiday",
"substitute": true
},
{
"date": "2026-10-09",
"name": "한글날",
"name_en": "Hangeul Day",
"substitute": false
},
{
"date": "2026-12-25",
"name": "크리스마스",
"name_en": "Christmas Day",
"substitute": false
}
],
"source": "Holiday dates: statutory KR public holidays (sync KASI 특일정보, data.go.kr, KOGL Type 1)."
}
curl --location --request GET 'https://zylalabs.com/api/12758/korea+calendar+api/24839/list+public+holidays?year=2026' --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 Korea Calendar API 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.
|
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Korea Calendar API gives you accurate Korean calendar data and Korean romanization through one fast, JSON, zero-dependency API running on a global edge.
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ENDPOINTS
GET /v1/holidays?year=2026
GET /v1/holidays/is?date=2026-09-25
GET /v1/romanize?text=YOUR_TEXT
GET /v1/today
COMING IN v1.1
Lunar-solar conversion, the 24 solar terms, and the sexagenary cycle - data that global holiday APIs do not provide.
WHO IT IS FOR
Apps serving Korea, K-culture and K-pop products, scheduling and HR tools, and calendar or astrology apps that need correct Korean holidays and clean romanization.
Holiday dates are South Korean statutory holidays (source: KASI public holiday data via data.go.kr).
Each endpoint returns specific data related to Korean public holidays, romanization of Hangul, and date conversions. For example, the holidays endpoint provides a list of holidays for a given year, while the romanization endpoint converts Hangul text into Revised Romanization.
Key fields include "date," "name" (Korean), "name_en" (English), "substitute" (boolean), and for lunar conversions, "lunar_year," "lunar_month," and "lunar_day." These fields provide essential information about holidays and date conversions.
The endpoints accept parameters such as "year" for the holidays endpoint, "date" for checking if a date is a holiday or for lunar conversions, and "text" for romanization. Users can customize requests by specifying these parameters.
The response data is structured in JSON format. For example, the holidays endpoint returns an object containing the year, count of holidays, and an array of holiday objects, each with relevant fields like date and names in both languages.
The data is sourced from KASI public holiday data via data.go.kr, ensuring that the holiday information is accurate and up-to-date. This reliable source contributes to the quality of the API's data.
Typical use cases include integrating Korean holiday information into apps, scheduling tools, and HR systems. Developers can also use the romanization feature for language learning apps or K-culture platforms to enhance user experience.
Users can utilize the returned data by parsing the JSON response to extract relevant information. For example, they can display holiday names and dates in their applications or use lunar conversion data for cultural or astrological insights.
Data accuracy is maintained through regular updates from reliable sources and adherence to official holiday designations. The API's design ensures that users receive consistent and accurate information regarding Korean holidays and dates.
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