---
title: "Poya Days (Sri Lanka) (斯里蘭卡滿月節)"
method: GET
path: "/api/trpc/poya.check"
tags: ["Sinhala"]
---

# Poya Days (Sri Lanka) (斯里蘭卡滿月節)

`GET /api/trpc/poya.check`

## Request

- Base URL: `https://api.asktian.com`
- URL: `https://api.asktian.com/api/trpc/poya.check`
- Auth: HTTP bearer

SRI LANKAN POYA DAYS — the full-moon uposatha holidays that structure the island's Buddhist year, Duruthu through Unduvap, every one a public holiday: Vesak (the Buddha's birth, enlightenment and parinibbāna), Poson (Arahat Mahinda brings Buddhism to Lanka), Esala (the first sermon and the Kandy perahera season). THE LOOP'S ROUND-55 DEFERRAL, CLOSED THE GAZETTE WAY: the official dates follow the state almanac's Surya-Siddhanta-lineage computation and CANNOT be reproduced from modern astronomy — Poson 2025 was gazetted June 10 against a June 11 astronomical full moon — so this engine serves the PUBLISHED tables only (2024–2027, two independent witnesses per year, arbitrations recorded: the 2027 Gazette Extraordinary No. 2493/05 overrules a prediction site's Medin/Vesak by one day; 2024's Navam settled 2–1 against the astronomical date) and REFUSES unpublished years by name (2028: single-sourced). Load-time laws: canonical name sequence, lunation-sized gaps, every date within 1.5 days of a true astronomical full moon. 2026 is the thirteen-poya year with Adhi Poson (May 30) flagged. Any date returns whether it is a poya (name, significance), the next poya with countdown, and the year's full table. Sri Lanka's Sinhala Buddhist reckoning becomes the catalogue's 35th tradition. Pure compute, no LLM.

Cost: 2 TIAN Points per call. tRPC procedure `poya.check`.

## Query parameters

- `input` string

## Response `200`

tRPC result envelope

- TrpcResult: tRPC HTTP response envelope.
  - `result` object
    - `data` object: The procedure's return value (system-specific).

---

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