Inauspicious Period API

Inauspicious Period

The Inauspicious Period API returns a focused, structured list of all unfavourable time windows for a given date and geographic location, derived from classical Vedic astrology and Panchang principles. This endpoint is the dedicated counterpart to the Auspicious Period API — rather than returning the full spectrum of daily timings, it isolates only the periods that Vedic tradition identifies as harmful or obstructive, making it a precise tool for avoidance-based scheduling.

What This API Does

This endpoint analyses the Panchang for the specified date, time, and location and returns a structured list of named inauspicious periods with their precise start and end times. All calculations are anchored to the astronomical sunrise at the provided coordinates, and the Ayanamsha system is configurable via a request header to support different Vedic schools of thought.

Data Returned

The response provides a complete set of inauspicious time periods for the day, typically including:

• Rahu Kalam — The most widely observed inauspicious period of the day, governed by the shadow planet Rahu; strongly avoided for new ventures, travel, and important decisions

• Gulika Kalam — An unfavourable window associated with Gulika (Mandi), the son of Saturn, considered inauspicious for auspicious activities

• Yamaganda — An inauspicious period associated with Yama, the lord of death; avoided for all significant undertakings

• Dur Muhurta — Specific inauspicious time slots during the day that are considered harmful for starting new activities

• Varjyam — A period of particular negativity derived from the Moon's Nakshatra; considered highly unfavourable for all activities

• Bhadra (Vishti Karana) — An inauspicious half-tithi period that recurs periodically and is avoided for auspicious events

• Sunrise and Sunset times — The anchor points from which all inauspicious period timings are calculated

Main Use Cases

• Avoidance scheduling — Enabling users, astrologers, and apps to clearly identify and avoid all inauspicious windows when planning important activities such as travel, business, medical procedures, or ceremonies

• Muhurta validation — Serving as a negative filter in muhurta (electional astrology) workflows to automatically flag or reject time slots that fall within inauspicious periods

• Daily planning and productivity apps — Powering a "times to avoid" feature in astrology or wellness apps that warn users before they schedule important tasks during harmful windows

• Wedding and event planning platforms — Helping planners and priests ensure that key rituals and ceremonies do not overlap with Rahu Kalam, Gulika Kalam, or other inauspicious periods

• Notification and alert systems — Triggering reminders or warnings to users when an upcoming inauspicious period (e.g., Rahu Kalam) is about to begin

Key Functionality

• Inauspicious-period focused — Unlike general Panchang endpoints, this API is purpose-built to return only the unfavourable time windows of the day, providing a clean, actionable dataset for avoidance-based use cases

• Complete inauspicious coverage — Returns all major Vedic inauspicious periods in a single response — Rahu Kalam, Gulika Kalam, Yamaganda, Dur Muhurta, Varjyam, and Bhadra — with precise start and end times

• Sunrise-anchored calculations — All period timings are derived from the actual astronomical sunrise at the specified location, ensuring alignment with traditional Panchang methodology

• Location-aware — Uses latitude, longitude, and timezone offset to compute the local sunrise and derive all inauspicious period timings for any location worldwide

• Configurable Ayanamsha — The X-Ayanamsha header allows selection of the sidereal correction system (e.g., Lahiri, Raman, KP), ensuring compatibility with different Vedic astrology traditions

• Multi-language support — The Accept-Language header enables period names and labels to be returned in the preferred regional or vernacular language, supporting diverse user bases