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.

The Pollen Tracker API provides daily insights into pollen levels for various pollen types, customized for a given latitude and longitude, with forecast durations available from 1 to 5 days.

Automate age calculations for individuals or events, streamlining age-related tasks and ensuring precise date computations effortlessly.

The Pollen Forecast API provides daily pollen forecasts based on specified latitude, longitude, and a 1-5 day range for various pollen types.

The Flight Planner API grants effortless access to future flight schedules, supplying vital information like aircraft specifics, departure times, airline details, and flight numbers.

Welcome to the Pregnancy Calculator API. This API provides endpoints for calculating Fertility Window, Pregnancy Due Date, Pregnancy Week, and Pregnancy Weight Recommendation. With this API, you can easily integrate these calculations into your applications, websites, or any other projects.

The Future UK Bank Holidays API allows developers to retrieve future bank holidays in the United Kingdom by using a required parameter for the date.

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.

Automate age calculations for individuals or events, streamlining age-related tasks and ensuring precise date computations effortlessly.

Automate age calculations for individuals or events, simplifying age-related tasks and ensuring accuracy in date calculations seamlessly.

Simplify the process of calculating age for people or events, improving the efficiency of age-related tasks while guaranteeing accurate date-based calculations with ease.

A globally usable mortgage and loan calculator supporting multiple currencies. Covers monthly repayments, full amortisation schedules, affordability reverse-calculation, early repayment savings, side-by-side comparison, total cost of ownership, APR, debt-to-income ratio, stamp duty estimates, refinance break-even, balloon payments, interest-only periods, loan consolidation, and biweekly payment options. Pure maths — no external data sources. Pass any currency code (USD, GBP, EUR, ZAR, AUD, etc.) for localised display.

Recent polls of the 2024 presidential election! Thousands of polls! Updated daily prior to the election. Choose between last 90, 30, and 7 days.

The Flight Prediction API provides effortless access to future flight schedules, offering vital information including aircraft details, departure times, airline specifics, and flight numbers.

Get a comprehensive trust and quality report for any website. Analyzes DNS health, SSL certificates, security headers, content quality, performance indicators, and overall trust score.

Horoscope by Date API delivers daily personalized zodiac predictions based on specific dates, offering insights into emotions, energy, and life guidance.

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

Streamline healthcare appointment scheduling by automatically considering Korea's public holidays for optimal patient management.

The Flight Track Future API delivers seamless access to upcoming flight details, including information on aircraft types, departure times, airline data, and flight numbers, ensuring users have the essential insights they need for efficient travel planning.

Ultimate Chinese Calendar API is a tool that provides information related to the Chinese lunar calendar, also known as the Chinese lunisolar calendar. This calendar is used in several countries, including China, Taiwan, and Vietnam, and is based on the movements of the moon.

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

Name Gender Probability API: Predicts likely gender based on names, giving applications accurate demographic information for personalization and segmentation."

Horoscope Date API is a powerful tools that provide developers with access to a vast database of astrological information, including horoscopes, zodiac signs, and other related data.

Seamlessly pull essential earnings calendar data to strengthen your financial analysis and guide smarter investment decisions.

Check corporate earnings dates, earnings per share, and estimated versus actual revenues of publicly traded companies for financial analysis and strategic decisions.