The Complete Sri Lankan
Public, Bank & Poya Holiday API
Ultra-fast, accurate, developer-first REST API. Astronomically computed Full Moon Poya days, lunar Islamic dates, Hindu festivals, Christian observances & National holidays.
Engineered for Developers
Astronomical Poya Engine
Full Moon Poya dates calculated using the Jean Meeus astronomical lunar phase algorithm calibrated specifically for Asia/Colombo (UTC+5:30).
Multi-Religious Coverage
Full multi-cultural support covering Buddhist Poyas, Hindu festivals (Deepavali, Thai Pongal), Islamic lunar observances, Christian holidays & National events.
Edge CDN & DDoS Security
Hosted on Vercel Serverless Edge CDN with built-in sliding window rate limiting (60 req/min) and HTTP security headers (HSTS, X-Frame-Options).
Download Complete Holiday Dataset
Export all 858+ Sri Lankan public holidays (2024–2045) for offline mobile apps, Excel spreadsheets, or database seeds.
Live API Playground
Click any preset endpoint or edit the path to test live responses in real-time.
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Sri Lanka Holiday Calendar Explorer
Browse, filter, and search through 858+ cataloged Sri Lankan holidays across 2024 to 2045.
Duruthu Full Moon Poya Day
Commemorates Buddha's first visit to Mahiyangana, Sri Lanka.
Tamil Thai Pongal Day
Harvest festival celebrated by Tamils.
Navam Full Moon Poya Day
Appointment of chief disciples Sariputta and Moggallana.
Independence Day
78th Independence Day of Sri Lanka.
Maha Sivarathri Day
Great night of Lord Shiva.
Medin Full Moon Poya Day
Buddha's journey to Kapilavastu.
Id-Ul-Fitr (Ramazan Festival Day)
Islamic festival marking the end of Ramadan fast.
Bak Full Moon Poya Day
Buddha's second visit to Nagadipa.
Good Friday
Commemorates the crucifixion of Jesus Christ.
Day prior to Sinhala & Tamil New Year Day
New Year preparation and auspicious rituals.
Sinhala & Tamil New Year Day
Traditional New Year celebrated across Sri Lanka.
Vesak Full Moon Poya Day & May Day
Vesak Full Moon Poya Day coinciding with May Day.
Day following Vesak Full Moon Poya Day
Second day of Vesak celebrations.
Id-Ul-Alha (Hadji Festival Day)
Feast of Sacrifice.
Poson Full Moon Poya Day
Arrival of Arahat Mahinda in Mihintale.
Esala Full Moon Poya Day
First sermon of Lord Buddha and Kandy Esala Perahera.
Adhi Nikini Full Moon Poya Day
Intercalary Adhi Nikini Poya Day.
Milad-Un-Nabi (Holy Prophet's Birthday)
Birthday of Prophet Muhammad (PBUH).
Nikini Full Moon Poya Day
Nikini Poya Day commemorating the First Buddhist Council.
Binara Full Moon Poya Day
Establishment of Bhikkhuni Sasana.
Vap Full Moon Poya Day
Completion of Vas retreat season.
Deepavali Festival Day
Festival of Lights.
Il Full Moon Poya Day
Sending of 60 Arahats on missionary work.
Unduvap Full Moon Poya Day
Arrival of Sangamitta Theri with Jaya Sri Maha Bodhi.
Christmas Day
Celebration of the birth of Jesus Christ.
Code Integration Snippets & AI Vibe Coder Prompt
Copy integration code for Next.js, React, Vue, Python, or copy our Master AI System Prompt to vibe code with AI!
🤖 MASTER AI SYSTEM PROMPT FOR VIBE CODERS (ChatGPT / Claude / Gemini ): "You are an expert full-stack engineer. Build a Sri Lankan public holiday feature for this app using the official Sri Lankan Holiday API. API Base URL: https://holiday.imrishmika.dev/api/v1/holidays API Key: None required (Free Open Source REST API) Requirements: 1. Fetch the next upcoming holiday using GET https://holiday.imrishmika.dev/api/v1/holidays/upcoming 2. Display a live ticking countdown widget to the next Sri Lankan holiday in Asia/Colombo timezone (UTC+5:30). 3. Check if today is a public holiday using GET https://holiday.imrishmika.dev/api/v1/holidays/today 4. Allow searching & filtering holidays by year (2024-2045) and type (buddhist, hindu, islamic, christian, national). 5. Implement graceful error handling, fallback states, and revalidate cache every hour. 6. Style using Tailwind CSS with glassmorphic cards and badges for public/bank status."
Frequently Asked Questions
Everything you need to know about the Sri Lankan Holiday API.