Overview

The Czech Namedays Calendar API lets you look up the Czech or Slovak nameday (svátek) associated with a given first name, or find whose nameday falls on a specific date. It is completely free with no authentication required and supports JSON responses. Responses are instant and lightweight, making it great for beginners.

Beginner Tip

No API key needed — call the endpoint directly. To get today's nameday, try https://api.abalin.net/today?country=cz. Supported country values are "cz" and "sk".

Available Data

The kind of data this API exposes, based on its documentation. We could not call the endpoint to confirm the exact field names.

event dates and names
holiday lists by country
date metadata

Example Response

Illustrative shape only — we were not able to call this endpoint (it requires credentials or exposes no public sample URL), so the fields below show the kind of data this API returns rather than a recorded response.

JSON Response · Illustrative
{
  "status": "success",
  "data": {
    "result": "Data from Czech Namedays Calendar",
    "description": "Lookup for a name and returns nameday date",
    "timestamp": "2025-01-15T10:00:00Z"
  }
}

Field Reference

data.day Day of the month for the nameday result.
data.month Month number for the nameday result.
data.name_cz The Czech name celebrated on this day.
data.name_sk The Slovak name celebrated on this day, which may differ from the Czech name.

Implementation Example

Calls a real endpoint of this API. Replace any placeholder credentials with your own key.

Request
const url = "https://api.abalin.net/today?country=cz";
const response = await fetch(url);
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

What Can You Build?

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

Common Errors & Troubleshooting

Generated guidance based on this API's documentation, not observed by us. Treat it as a starting point and check against the provider's own error reference.

Null or missing name in response Queried a date that has no assigned nameday in that country
Not every date has a nameday; always check the field for null before using it in your UI.
400 Bad Request on name lookup Name contains Czech special characters that were not URL-encoded
URL-encode Czech characters before passing the name as a query parameter, e.g., "Tom%C3%A1%C5%A1" for "Tomáš".
Unsupported country error Passing a country code other than cz or sk
The API only supports "cz" (Czech) and "sk" (Slovak); any other value returns an error.

Metadata Score Breakdown

Estimated from metadata — endpoint not independently tested

This score is estimated from observable metadata — HTTPS support, authentication model, declared CORS, and documentation reachability — because the API requires authentication or exposes no publicly testable endpoint. The five-signal breakdown is only shown for live-tested APIs.

Metadata estimate · endpoint not independently tested

Technical Specifications

Auth No Auth
HTTPS NO
CORS UNKNOWN
Category Calendar
Difficulty Beginner
Listing details not endpoint-verified

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