Convert dates between 13 calendars and get Islamic, Jewish, Chinese and Persian holiday dates (Ramadan, Eid, Passover, Chinese New Year, Nowruz) for 1900-2100.

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.

Public and bank holidays for 100+ countries and their regions for any year, with localized names, plus a check whether a given date is a holiday.

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

This API provides detailed time zone information, encompassing the name of the time zone, the current date and time, and components such as the year, month, day, and day of the week, along with specific time details.

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.

Indicates if a date is a trading day for LatAm markets (BYMA, B3, BMV); returns the next trading day, lists annual holidays, and calculates business days between dates

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.

Interact with celestial knowledge through Horoscope Daily API for spiritual and practical direction.

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.

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.

Horoscope Today API provides personalized daily predictions based on zodiac signs and weekdays, offering insights into emotions, energy, and decision-making guidance.

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.

Gestational age at any given date, returned as a 29w2d label and as total days.

Antenatal visit dates from the WHO 2016, NICE or ACOG published schedules, as calendar dates.

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.