v2.0 Engine·Gazette Act 29

The Modern EnterpriseSri Lanka Cultural & Holiday Engine.

Microsecond calendar lookups, gazette-verified public holidays, and commercial bank clearing schedules across Sri Lanka (+05:30).

No account requiredColombo: 07:20:00 (+05:30)
edge-node-01.colombo.slapi.vercel.app
Official Data FeedsSYNCED
Govt. Gazette:2026 Regular
Public Admin:Act No. 29
Buddhist Affairs:12 Poya Dates
Core Engine
SpecialDays LK Gateway
Statutory DB:2026 Gazette Acts
Edge Cache:HIT (<1.2ms)
Timezone Engine:Asia/Colombo (+05:30)
Global DeliverySSE PUSH
REST Endpoints:/api/v1/today
Realtime Stream:Active (SSE)
SDK Ready:special-days.js

Built on Modern Production Infrastructure

27 Gazette Holidays· Official Public & Bank
Full Moon Poya· Astronomical Lunar Engine
CBSL Bank Clearing· Inter-Bank Settlement Alert
Asia/Colombo (+05:30)· Midnight Rollover Protocol
Trilingual Engine· English · සිංහල · தமிழ்
WooCommerce & Shopify· Checkout Delivery Buffer
Sub-Millisecond Edge· < 1.2ms Response Latency
Server-Sent Events· Realtime Live Push (SSE)
Universal REST API· JSON Schema & Swagger UI
Zero Proprietary SDK· Native HTTP / cURL
27 Gazette Holidays· Official Public & Bank
Full Moon Poya· Astronomical Lunar Engine
CBSL Bank Clearing· Inter-Bank Settlement Alert
Asia/Colombo (+05:30)· Midnight Rollover Protocol
Trilingual Engine· English · සිංහල · தமிழ்
WooCommerce & Shopify· Checkout Delivery Buffer
Sub-Millisecond Edge· < 1.2ms Response Latency
Server-Sent Events· Realtime Live Push (SSE)
Universal REST API· JSON Schema & Swagger UI
Zero Proprietary SDK· Native HTTP / cURL

Turn raw government gazettes into microsecond calendar APIs.

Directly synchronized with the Department of Government Information, Buddhist Affairs Council, and Central Bank of Sri Lanka. High-availability edge caching delivers pre-calculated public, bank, and mercantile holidays in sub-millisecond time.

latency
< 1.2ms
2026 holidays
27
timezone
+05:30
01 / INGEST

Official Gazette Ingestion

Holidays and observances are cross-verified from the Department of Government Information, Parliamentary gazettes, and Buddhist Affairs councils.

  • Public, Bank & Mercantile classifications
  • Poya lunar cycle astronomical calculations
02 / COMPUTE

Statutory Calculation Engine

Transactional ACID storage guarantees verifiable gazette authority, while high-speed edge caching normalizes date boundaries against the Asia/Colombo clock.

  • Midnight day rollover in Asia/Colombo
  • Zod-validated query parameter schemas
03 / DELIVER

Microsecond Delivery & SSE

Real-time Server-Sent Events (SSE) stream instant updates to client applications whenever holidays, bank closures, or gazettes are updated.

  • Real-time SSE event pipeline
  • Developer Dashboard API Key management

Precision calendar intelligence, on infrastructure you control.

The high-performance API platform for Sri Lanka developers. Realtime SSE streams, official gazette taxonomy, and multi-language cultural titles with sub-millisecond latency.

Live Stream Engine

Real-time SSE event observability

Server-Sent Events push holiday updates and gazette revisions to client apps instantly with zero polling overhead.

GET /api/v1/events/streamCONNECTED

event: connected

data: {"client_id": "c-9128", "active_clients": 1}

event: update

data: {"action": "EVENT_PUBLISHED", "slug": "vesak-full-moon-poya"}

Tri-Lingual Engine

Full English, Sinhala & Tamil parity

Official constitutional names in all three languages. Automatic script fallback, transliterations, and UTF-8 search.

Event Preview

සිංහල හා දෙමළ අලුත් අවුරුදු දිනය

2026 අප්‍රේල් 14·සංස්කෘතික හා රජයේ නිවාඩු දිනය

සූර්යයා මීන රාශියෙන් මේෂ රාශියට සංක්‍රමණය වීම නිමිත්තෙන් සමරනු ලබන ජාතික සංස්කෘතික මහෝත්සවය.

Timezone Authority

Asia/Colombo (+05:30) midnight rollover

Guarantees statutory date boundary rollover at exactly 00:00:00 Colombo local time with zero UTC day-shift confusion for overseas servers.

Zone Identifier:Asia/Colombo
UTC Offset:+05:30 (Fixed, No DST)
Day Rollover Guarantee:Strict Microsecond EOD
Statutory Taxonomy

Public, Bank & Mercantile classifications

Essential for financial clearing systems, payroll computation, logistics planning, and school attendance calendars.

🏛️ Public HolidayGovt. Offices Closed
🏦 Bank HolidayCentral Bank / Clearing
💼 Mercantile HolidayCommercial & Private

Official Sri Lanka Statutory Modules.

Official Sri Lanka gazette holidays, astronomical Full Moon Poya lunar cycles, Central Bank clearing schedules, and instant merchant delivery buffer rules.

Poya CalculationsAstronomical Lunar
Gazette HolidaysAct No. 29 Statutory
CBSL Bank ClearingInter-Bank RTGS & CEFT
Mercantile LeaveShop & Office Act
Sinhala & Tamil NYAuspicious Times
Thai Pongal DayHarvest Festival
Eid & RamazanHijri Calendar Sync
Christmas & Holy DaysChristian Observances
Poya CalculationsAstronomical Lunar
Gazette HolidaysAct No. 29 Statutory
CBSL Bank ClearingInter-Bank RTGS & CEFT
Mercantile LeaveShop & Office Act
Sinhala & Tamil NYAuspicious Times
Thai Pongal DayHarvest Festival
Eid & RamazanHijri Calendar Sync
Christmas & Holy DaysChristian Observances
WooCommerce PluginDelivery Buffer Filter
Shopify App EmbedStorefront Notices
Sri Lanka
SpecialDays LKAsia/Colombo (+05:30)
Trilingual EngineEnglish · සිංහල · தமிழ்
LankaPay AlertsBank Settlement Hold
Midnight Rollover00:00:00 Colombo Clock
Courier LogisticsIslandwide Dispatch ETA
WooCommerce PluginDelivery Buffer Filter
Shopify App EmbedStorefront Notices
Sri Lanka
SpecialDays LKAsia/Colombo (+05:30)
Trilingual EngineEnglish · සිංහල · தமிழ்
LankaPay AlertsBank Settlement Hold
Midnight Rollover00:00:00 Colombo Clock
Courier LogisticsIslandwide Dispatch ETA
Storefront BannersTop Holiday Alerts
Floating ToastsCustomer Notification
Gazette VerifierGovt Certified Proof
Sub-Millisecond< 1.2ms Response Time
Live Realtime PushInstant Event Stream
27 Verified Days2026 Statutory Calendar
Universal REST APIOpenAPI 3.0 / JSON
Storefront BannersTop Holiday Alerts
Floating ToastsCustomer Notification
Gazette VerifierGovt Certified Proof
Sub-Millisecond< 1.2ms Response Time
Live Realtime PushInstant Event Stream
27 Verified Days2026 Statutory Calendar
Universal REST APIOpenAPI 3.0 / JSON
Official WooCommerce & WordPress Extension

Automate Holiday Delivery Holds & Banners on WooCommerce.

Install once. Automatically buffer estimated courier shipping dates on mercantile holidays, announce CBSL bank clearing pauses, and display authentic trilingual celebrations on your store.

SpecialDays Plugin

SpecialDays Sri Lanka for WooCommerce

Version 2.0.4 · Production Stable · WordPress 6.x & WooCommerce 8.x+

Delivery Buffer Rule

Auto +1/+2 days buffer on Mercantile holidays

Bank Settlement Alert

CBSL RTGS & LankaPay clearing notices

4 Dynamic Visual Themes

Edgeway Dark, Ceylon Maroon, Gold & Light

Trilingual Sri Lanka

Instant English, සිංහල & தமிழ் translations

3-Minute Quick Setup Guide

1

Download the Plugin Zip

Click the button to download specialdays-woocommerce-plugin.zip.

2

Upload to WordPress

Go to WP Admin > Plugins > Add New > Upload Plugin and choose the downloaded file.

3

Enter API Key & Go Live

Paste your API token from the developer dashboard. Holiday banners and shipping buffer rules activate instantly.

✓ 100% Free Open Source✓ Zero Theme Code Edits
Interactive Storefront Simulator

Experience Real Sri Lankan Holidays on a Live Store.

Test automated shipping buffer delays, courier dispatches, and localized gazette notices on a live e-commerce checkout.

1. Select 2026 Sri Lanka Holiday or Pick Any Date:
Asia/Colombo (+05:30) Synchronized
Store Theme Palette:
Notice Presentation:
Notice Header & Statutory Scopes:
Store Plugin Active: Domex Courier Integration
yourstore.lk
Storefront.lk
Domex
Sri Lanka Holiday NoticeBlessed Vesak to All!

Vesak Full Moon Poya Day (2026-05-31)

🇱🇰

Commemorating the Birth, Enlightenment, and Parinirvana of Gautama Buddha. Central Bank clearing paused.

Public Status

🏛️ HOLIDAY

CBSL Settlement

🏦 PAUSED

Mercantile Leave

💼 PAID HOLIDAY

Realtime Sri Lanka Gazette Engine (+05:30)Official Gazette Synchronized
Checkout Dispatch TimelineCourier: Domex
Customer Order Placed:2026-05-31
Gazette Dispatch Buffer:Same-Day Priority Dispatch
Inter-Bank Settlement:CBSL Paused (Next Business Day)
Universal Client Integrationv2.0 Active

When embedded on Shopify, WooCommerce, or any HTML website, this widget automatically detects Sri Lanka statutory events and synchronizes checkout delivery timelines.

Zero Hardcoded Secrets300 RPM Live Edge
Interactive REST Console

Direct API explorer & live sandbox.

Send live queries to the SpecialDays API engine right now. Inspect response headers, latency, cache hits, and JSON payloads.

Manage API Keys in Dashboard
API Key Header:
Public sandbox: 60 RPM | Authenticated: 300 RPM
Production Endpoints
GET/api/v1/today
Status:------
null
Gazetted Calendar Registry

2026 Sri Lanka verified event catalog.

Every date is cross-checked against Parliamentary gazettes, Central Bank holiday schedules, and Buddhist Ministry astronomical charts.

Showing 0 of 0 gazetted 2026 events
Loading verified 2026 event catalog...
Developer & Merchant Knowledge Base

Frequently asked questions.

Everything you need to know about Sri Lanka gazette synchronization, Poya lunar cycles, CBSL bank clearing, WooCommerce and Shopify store integration, and timezone precision.

Special Days in Sri Lanka represent official statutory gazette holidays governed by the Holidays Act No. 29 of 1971, including 12 Full Moon Poya lunar days, national celebrations (Independence Day, Sinhala & Tamil New Year), cultural harvest festivals (Thai Pongal), Christian observances (Christmas, Good Friday), and Islamic observances (Eid-ul-Fitr, Eid-ul-Adha, Milad-un-Nabi). Each special day is legally classified under Sri Lankan law into Public, CBSL Bank Clearing, and Mercantile commercial leave categories.

Build on Sri Lanka's Calendar API Today.

Deploy automated holiday detection, Poya moon date calculation, and trilingual celebrations into your applications with sub-millisecond precision.