Access accurate public holiday data by country and year, including local names, holiday types, dates, regional coverage, and observance details.

Libera.Date.Api is a high-precision date calculation engine designed to streamline business logic for global applications. Its core strength lies in its advanced Working Days System, which accurately calculates business days by automatically excluding weekends and public holidays for multiple countries (including 100 countries). Beyond simple duration checks, the API offers intelligent scheduling tools like finding the nearest available working day, analyzing date ranges for non-working intervals, and distinguishing between standard weekends and legal holidays. Whether you are computing SLAs, planning delivery windows, or building HR rosters, Libera.Date.Api ensures your dates align with real-world business calendars.

Count working days between two dates or add business days to a date, skipping weekends and public holidays of 100+ countries and regions.

Accurate business-day, holiday, and scheduling math for major countries and their subdivisions — without maintaining a single holiday calendar yourself. Add or subtract working days, check if a date is a business day, find the next valid date, or count working days between two dates, with full support for regional subdivisions, custom weekends, and your own blackout dates. One simple GET call, instant JSON.

Enhance your scheduling with the Smart API, designed to simplify date and business day calculations with intelligence.

Trust our Reliable API for consistent date and business day calculations, ensuring you never miss a deadline again.

The Global API delivers seamless date and business day calculations worldwide, catering to international business needs.

Get precise results every time with our Accurate API for calculating dates and business days—perfect for business professionals.

Look up public holidays for 55 countries, calculate business day deadlines, find the next business day, export holidays to iCal, and more — all backed by versioned JSON data with no external dependencies at runtime. Covers 55 countries across Africa, Americas, Asia, Europe and Oceania for years 2024 to 2027.

Access a detailed worldwide holiday calendar to enhance your applications.

Check and retrieve holiday data from around the world with ease and accuracy.

Seamlessly retrieve worldwide holiday information for planning and scheduling.

Validate transaction dates against Korea's public holidays, ensuring compliance and smooth fintech operations.

Access vital public holiday data for payroll processing in Korea seamlessly.

Embark on a temporal journey with the World Time API – your global clock for instant access to the current date and time in any city. Seamlessly integrating with applications, this API synchronizes the world, ensuring users stay connected to the heartbeat of time across diverse corners of the globe.

Calculates business days, SLA due dates, holiday-aware deadlines, skipped weekends and holidays, business hours, and business-time durations.

Schedule weekly events with precision using the Weekly BYDAY Recurrence Weekly BYDAY Recurrence RRULE API.

Quickly extract vital holiday schedule data for planning and analytics using our Holiday Schedule API.

Due date from embryo transfer date. Day-3, day-5, day-6 and egg retrieval calculated separately.

Due date from last menstrual period using Naegele's rule, with 21-45 day cycle length correction.

Conception date from a last menstrual period or from a known due date, as ISO 8601 dates

Learn about 13th month pay regulations to ensure compliance and attract talent globally.

Calculate business days accurately while accessing global holiday data to optimize your workflows.

Ensure timely project deliveries with the SLA Deadline Calculator, using global holidays for precise deadline calculations.

Harness valuable insights with the Retrieve Employment Data API, delivering real-time statistics and trends in the job market for informed decisions.