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Non-Working Days

Database of ICS files for non working days

Open documentation ↗
No keyHTTPSNo CORSCalendar

Verified 4 days ago: 100% uptime

API key

Not required

HTTPS

Supported

Browser calls

No, needs a proxy

Status

Live · 100/100

What our checks found

Health score
100/100
Reliability
100%
Average latency
903ms

Last checked 2026-09-18. Measured independently, not self-reported by the provider.

How to call it

A starting template for Non-Working Days. Replace ENDPOINT with the path from the official documentation, which we link above rather than guess at.

# No authentication required.
curl -s "https://github.com/ENDPOINT" \
  -H "Accept: application/json"

This API does not send CORS headers, so a browser will block a direct call from your front end. Call it from your server, or put a small proxy in front of it.

Where this listing comes from

Aggregated from 2 public sources (public-api-lists, public-apis), then normalised and checked by us. If something here is wrong, tell us and we will correct it.

Other Calendar APIs

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Byabbe

Calendar

Seach histories from wikipedia for a particular day

No keyCORSHTTPS

Verified 4 days ago: 100% uptime

View Details

caldays

Calendar

Public holidays for 195+ countries

No keyCORSHTTPS

Verified 4 days ago: 100% uptime

View Details

The Calendar

Calendar

Public holidays for US states and 30 countries plus sports and finance calendars as static JSON

No keyCORSHTTPS

Verified 4 days ago: 100% uptime

View Details

UK Bank Holidays

Calendar

Bank holidays in England and Wales, Scotland and Northern Ireland

No keyCORSHTTPS

Verified 4 days ago: 100% uptime

View Details

Nager.Date

Calendar

Public holidays for more than 90 countries

No keyHTTPS

Verified 4 days ago: 100% uptime

View Details

Non-Working Days — common questions

Answered from what our own scheduled checks found, not from the provider's marketing.

Is Non-Working Days free to use?

Non-Working Days is listed in our free catalogue and required no credential when we called it. It needs no authentication at all, so you can send a request without signing up. Free tiers can still carry rate limits or non-commercial terms, so check the provider's own terms before shipping.

Does Non-Working Days need an API key?

No. We called Non-Working Days on 2026-09-18 with no key, no token and no Authorization header, and it responded. That is what puts it in our no-key collection.

Can I call Non-Working Days from browser JavaScript?

Not directly. Non-Working Days did not return CORS headers when we checked, so the browser will block your page from reading the response even though the request itself succeeds. Call it from a server, or put a small proxy in front of it.

Is Non-Working Days still working?

Yes, as of 2026-09-18. Our automated check reached Non-Working Days and recorded a 100% reliability score with a median response time of 903 ms. We re-check on a schedule, and this page updates with the result.

Is Non-Working Days available over HTTPS?

Yes. Non-Working Days serves over HTTPS, so you can call it from a secure page without triggering a mixed-content block.