---
title: "Firdaria"
method: POST
path: "/firdaria"
tags: ["Prognostics"]
---

# Firdaria

`POST /firdaria`

Calculate Firdaria planetary periods: the traditional Persian time-lord system based on sect and planet order.

## Request body

- Firdaria — Natal chart plus the number of years of firdaria periods to return.
  - `date` string, required
  - `time` string, required
  - `timezoneOffset` number, nullable — Hours from UTC at the given moment, not minutes. Fractional zones are hours too: 5.5 for India, 5.75 for Nepal, -3.5 for Newfoundland. Defaults to 0, meaning UTC.
  - `latitude` number, required
  - `longitude` number, required
  - `houseSystem` string
  - `name` string
  - `city` string
  - `zodiacType` 'tropical' | 'sidereal'
  - `ayanamsaId` number, nullable
  - `ayanamsa` 'fagan-bradley' | 'lahiri' | 'de-luce' | 'raman' | 'krishnamurti' | 'kp' | 'yukteshwar' | 'jn-bhasin' | 'true-citra' | 'djwhal-khul' — Sidereal school by name. Lahiri when omitted. Equivalent to ayanamsaId; send either.
  - `cosmogram` boolean
  - `maxYears` integer

## Response `200`

Successful calculation

- object
  - `ok` boolean
  - `data` object
    - `periods` object[], nullable
      - `planet` string, nullable
      - `subPlanet` string, nullable
      - `startDate` string, nullable
      - `endDate` string, nullable
      - `isActive` boolean, nullable

## Other responses

- `400` — Validation error
- `401` — Missing or invalid API key

## Changes

- **2026-08-24** `8ab5a768b521` — 1 warning, 2 info
  - removed the optional property `data/periods/items/subPeriods` from the response with the `200` status
  - added the optional property `data/periods/items/isActive` to the response with the `200` status
  - added the optional property `data/periods/items/subPlanet` to the response with the `200` status
- **2026-08-18** `dd3764875e7a` — 1 info
  - added the new optional request property `allOf[#/components/schemas/ChartInput]/ayanamsa`
- **2026-08-15** `e637d1a9911b` — 2 warning
  - the `allOf[#/components/schemas/ChartInput]/timezoneOffset` request property's max was set to `14.00`
  - the `allOf[#/components/schemas/ChartInput]/timezoneOffset` request property's min was set to `-14.00`
- **2026-08-11** `b0533bcc12c0` — 4 breaking, 4 warning, 2 info
  - the request property `allOf[#/components/schemas/ChartInput]/latitude` became not nullable
  - the request property `allOf[#/components/schemas/ChartInput]/longitude` became not nullable
  - the request property `allOf[#/components/schemas/ChartInput]/latitude` became required
  - the request property `allOf[#/components/schemas/ChartInput]/longitude` became required
  - …6 more

[Change history](https://skmtc.dev/astroway/apis/astroway-calculation-api/changes/firdaria/post.md)

---

[API](https://skmtc.dev/astroway/apis/astroway-calculation-api.md) · [All operations](https://skmtc.dev/astroway/apis/astroway-calculation-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/astroway/astroway-calculation-api/revisions/8ab5a768b521/schema)