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Annual calendar Annual Calendar

Popular APIs AI & Machine Learning Automotive & Vehicle Data Commerce & eCommerce Communication & Messaging Company Data Data & Analytics Entertainment & Media Finance & Payments Food & Nutrition Health & Fitness Legal & Compliance Location & Mapping Market Data & Trading Music & Audio Natural Language Processing (NLP) News & Events Real Estate & Housing Science & Education Search & Discovery Security & Cybersecurity Social Media & Networking Sports & Gaming Sustainability & Green Tech Tools & Utilities Travel & Transportation Visual Recognition & Imaging Voice & Speech Technology Weather & Environment

Event Dates Date Lookup Holiday Management Calendar Integration Lunar Calendar Conversion Availability Checking SLA Deadline Calculation Time Zone Handling Lunar Calendar Information Regional Coverage Project Delivery 24 Solar Terms Business Days Calculation Substitute Holidays Government Data Holiday Events Email Quality Metrics Holiday Types Holidays Global Coverage

Best calendário anual APIs

Holiday Calendar API

News & Events

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

Free 7-Day Trial

100% uptime 27ms avg MCP ready

Korea Calendar API

Tools & Utilities

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.

100% uptime 55ms avg MCP ready

Global Holidays and Business Days API

Tools & Utilities

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.

Free 7-Day Trial

100% uptime 114ms avg MCP ready

Holidays API

News & Events

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.

Free 7-Day Trial

100% uptime 472ms avg MCP ready

Ultimate Chinese Calendar API

Market Data & Trading

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.

Free 7-Day Trial

100% uptime 1,091ms avg MCP ready

Healthcare Appointment Scheduling Korea Public Holidays API

News & Events

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

Free 7-Day Trial

100% uptime 223ms avg MCP ready

Comprehensive Korea Public Holidays API

News & Events

Access detailed information on all public holidays in Korea, ensuring you're always informed and prepared.

Free 7-Day Trial

100% uptime 223ms avg MCP ready

Korea Public Holidays Calendar API

News & Events

Stay organized with a comprehensive calendar of Korea's public holidays for personal or business use.

Free 7-Day Trial

100% uptime 223ms avg MCP ready

Korea Public Festivities API

News & Events

Explore diverse public festivities throughout Korea to enrich your experience and community engagements.

Free 7-Day Trial

100% uptime 223ms avg MCP ready

Korea National Holidays API

News & Events

Discover all national holidays in Korea with ease, enhancing your planning and event organization.

Free 7-Day Trial

100% uptime 223ms avg MCP ready

Earnings Calendar Information API

Finance & Payments

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

Free 7-Day Trial

100% uptime 717ms avg MCP ready

Earning Calendar API

Finance & Payments

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

Free 7-Day Trial

100% uptime 1,957ms avg MCP ready

Calendar Scheduling Occurrences RRULE API

Tools & Utilities

Streamline your calendar's scheduling process with our Calendar Scheduling Occurrences Calendar Scheduling Occurrences RRULE API.

100% uptime MCP ready

Antenatal Visit Schedule Dates API

Health & Fitness

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

Free 7-Day Trial

100% uptime MCP ready

ACOG Ultrasound Redating Rules API

Health & Fitness

Applies ACOG Committee Opinion 700 Table 1 to decide whether an ultrasound overrides LMP dating.

Free 7-Day Trial

100% uptime MCP ready

Gestational Age Calculator and Week Conversion API

Health & Fitness

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

Free 7-Day Trial

100% uptime MCP ready

Retrieve Holiday Calendar Information API

Tools & Utilities

Streamline your applications by retrieving accurate holiday calendar information effortlessly with our Retrieve Holiday Calendar Information API.

Free 7-Day Trial

100% uptime MCP ready

Holiday Events Data Fetch API

News & Events

Effortlessly access a comprehensive database of global holiday events and dates with our Holiday Events Data Fetch API.

Free 7-Day Trial

100% uptime MCP ready

Holiday Schedule API

Data & Analytics

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

Free 7-Day Trial

100% uptime MCP ready

LMP Based Due Date Calculation API

Health & Fitness

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

Free 7-Day Trial

100% uptime MCP ready

Pregnancy Trimester and Term Milestones API

Health & Fitness

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

Free 7-Day Trial

100% uptime MCP ready

Ultrasound Dating Based on Fetal Biometry API

Health & Fitness

Dating from BPD, HC, AC and FL measurements in millimetres, using Hadlock 1984 equations.

Free 7-Day Trial

100% uptime MCP ready

Conception Date from LMP Calculation API

Health & Fitness

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

Free 7-Day Trial

100% uptime MCP ready

SLA Deadline Calculator Global Holidays API

Tools & Utilities

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

Free 7-Day Trial

100% uptime MCP ready

Business Days Calculator and Global Holidays API

Tools & Utilities

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

Free 7-Day Trial

100% uptime MCP ready

Data Extraction Email Validation Chinese Public Holidays Outreach Optimization Global Coverage Local Names Holidays Analytics Holiday Calendar Data Analytics Date Lookup Regional Coverage Holiday Management Business Days Calculation calendário anual Due Date Calculation Gestational Age Trimester Milestones ACOG Redating More...

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