Global holiday date prediction service

Holiday and Business Day data for App and blockchain developers. Our unique approach using open data and consensus putting you back in control whilst giving back to the open source community. Try our API!

Try us out with a free 1 month trial.


"Off Chain Data is a brilliant project and company. They made a donation to the open source project I maintain (python-holidays) for being used in their software: my appreciation goes to them for this and for their very innovative work."

- Maurizio Montel ("dr.prodigy")

Holidays from around the world

Off Chain Data's Holiday Oracle currently covers 167 countries worldwide. Have a look at our coverage or try out our API for yourself.

Here's a sample of holidays for today that can be found in Off Chain Data's Holiday Oracle.

Today's Date
New Zealand
Wellington Anniversary Day

World Wide Coverage

Off Chain Data's Holiday Oracle covers 167 countries worldwide. Our holiday and business day predictions are constantly being updated with open data.

To save you assessing various data sources, or limiting yourself to holiday data projects only in your preferred programming language, Holiday Oracle uses open data and machine learning techniques in a consensus algorithm to predict holidays and business days to 2030 and delivers these date predictions, along with a consensus score, via an API or Smart Contract Oracle.

Trustless Open Data

Holiday Oracle uses machine learning techniques in a consensus algorithm to predict holidays and business days and delivers date predictions.

API and Smart Contracts

Access holiday and business day data via our API which has been designed to integrate easily into various blockchain platforms.


  • 167 countries
  • 318 subdivisions
  • Holiday names in English and localised languages

Business Days

  • Dates and names of public holidays
  • Geographical identification of weekends
  • Calculation of next business day


Holiday Oracle's date predictions are based on open data - and holidays across the globe change constantly. Spot a wrong date? Report it to us and we will let the open data projects with this issue know!

Free Trial

Try our service before buying.

First 100 users sign up for free for the first 12 months. *

Other users have a 1 month free trial.

Plans and Pricing

Choose A Plan That's Right For You.

Affordable pricing which supports the open source software community. 15% of revenue will be donated!

Our best (and only!) pricing plan - $9 USD per month**

** Exclusive of any sales, goods/services or value added tax which may be applicable. First month FREE! 30 day money back guarantee

Free Trial


Free For First 100 users! *

Free for the first 100 users to sign up before 31 December 2020 for the first year, saving US$99 - thereafter annual subscription fee will apply. All other terms of the standard plan subscription apply during the free period.

Standard Plan

$9 USD/Per Month

First month FREE!

 100,000 monthly API requests

 Commercial use

 All countries and subdivisions

 Determination of working/business days

 All languages

 Adjustable consensus score threshold

Free periodic data updates for 12 month subscription period! Invoiced as US$99/year

Enterprise Plan

Need more?

Enterprise users

Contact us for an enterprise solution for you.

* free for the first year, saving $99 USD