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

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.

A Historical Moments API is a powerful tool that offers users access to a vast collection of historical events, people, facts and figures from different time periods and cultures.

Unearth the past with the Historical Events API! Explore significant moments from 3200 BCE to 2000 CE, spanning ancient civilizations to the modern era. Ideal for history, culture, and education applications. Build captivating websites, apps, or games with this frequently updated and reliable API. Embrace history and bring it to life!

The Historical Events By Year API allows users to retrieve significant world events that occurred during a specific year.

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.

EPC label, EPBD MEPS compliance, and stranding-risk screening across 8 EU markets — primary energy, solar obligation, renovation cost, and cap-rate discount modelling for lenders and asset managers.

Unlock a world of celebration with the Holidays API! Dive into a treasure trove of festive data spanning 230+ countries. Delve into past revelries or plan ahead with future calendars. From public jubilations to religious observances and bank holidays, this API ensures your application is always in sync with global festivities.

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 comprehensive historical events API delivering accurate, structured data across centuries, enabling applications to provide engaging timelines, insights, and context.

Unlock the tapestry of time with the Events in History API—a portal to explore the profound and pivotal moments that shaped our world. From ancient marvels to contemporary milestones, this API unveils a kaleidoscope of renowned events, offering a captivating journey through the annals of human history.

Facilitate seamless compliance checks with our EU Building Energy Compliance API for Fund Compliance Teams designed specifically for Fund Compliance Teams.

Optimize your acquisition strategies with our Acquisitions Focused Acquisitions Focused EU Building Energy Compliance API, ensuring energy-efficient properties.

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

Trimester boundaries, 24w0d viability, and four preterm and four term classes with their dates.

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.

Easily retrieve rich information about crucial historical events using the Retrieve Historical Events Information API.

Extract engaging content related to pivotal historical events seamlessly with the Historical Events Content Extractor API.

Retrieve and explore an extensive archive of historical events with the Historical Events Archive Retrieval API.

Access detailed data on significant historical events effortlessly with our Historical Events Data Fetcher API.

Get comprehensive data on historical events quickly and efficiently with the Get Get Historical Events Data API.