---
title: "Panchang Festival Single"
method: GET
path: "/panchang/festival/{rule_key}"
---

# Panchang Festival Single

`GET /panchang/festival/{rule_key}`

## Request

- Base URL: `https://jyotish-api.bda.ai` (the document declares no server; this is the origin it was published from)
- URL: `https://jyotish-api.bda.ai/panchang/festival/{rule_key}`
- Auth: none declared

Compute a single festival in a given year for a given city.
Useful for 'When is Diwali 2026 in Sydney?' style questions.

The 200 occurrence payload is read-only and deterministic and is fetched by
answer-engine/SEO crawlers for 'when is <festival> <year>' queries, so it is
gzip-negotiated via the audited `_json_response_maybe_gzip` helper: the
DECOMPRESSED body is byte-identical to the old `return _with_meta({...})`
path (no contract/field/value change), and both 404 paths (unknown rule key,
un-resolvable occurrence) are unchanged. No PII; no reflected request input.

## Path parameters

- `rule_key` string, required

## Query parameters

- `year` integer, nullable
- `lat` number
- `lng` number
- `tz` string

## Response `200`

Successful Response

- unknown

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/bda/apis/bda-jyotish-panchang-service.md) · [All operations](https://skmtc.dev/bda/apis/bda-jyotish-panchang-service/llms.txt) · [OpenAPI document](https://skmtc.dev/bda/apis/bda-jyotish-panchang-service/revisions/90f241bf4009?raw)