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Biorhythm Details By Date

The Biorhythm Details By Date API calculates a person's biorhythm cycles for a specific target date, rather than the current day. By supplying both birth details and a separate reference date, this endpoint enables historical lookups, future projections, and date-specific biorhythm analysis — making it ideal for planning, retrospective insights, and time-based comparisons.

What This API Does

This endpoint computes the state of a person's biorhythm cycles — physical, emotional, intellectual, and secondary — as they stand on a user-specified date. Unlike a standard biorhythm endpoint that calculates cycles for today, this variant accepts an explicit target date (cDay, cMonth, cYear) alongside the person's birth details, allowing the caller to query biorhythm data for any point in time: past, present, or future.

Multi-language support is available via the Accept-Language header, and the Ayanamsha system can be specified through the X-Ayanamsha header for consistency with other astrology-based endpoints on the platform.

What Data It Returns

The response provides detailed biorhythm cycle data for the specified target date, which may include:

• Physical cycle value and phase (e.g., peak, low, critical) as of the target date
• Emotional cycle value and phase as of the target date
• Intellectual cycle value and phase as of the target date
• Secondary cycles such as Intuition, Aesthetic, Awareness, and Spiritual cycles (where supported)
• Cycle percentage or numeric value indicating the position within each cycle on the given date
• Critical day indicators — flags for days when a cycle crosses the zero line
• Days elapsed from birth to the target date
• Target date echoed back for confirmation

Main Use Cases

• Future planning: Projecting biorhythm states on upcoming dates to schedule important events, competitions, surgeries, or decisions during peak cycle phases
• Historical analysis: Looking up biorhythm states on past dates to correlate cycle positions with real-life events or outcomes
• Date-specific wellness reports: Generating personalised biorhythm snapshots for a chosen date, such as a birthday, anniversary, or milestone
• Astrology and holistic platforms: Combining date-specific biorhythm data with astrological transits or muhurta calculations for comprehensive timing guidance
• Comparative cycle analysis: Querying multiple dates in sequence to build full cycle charts or identify upcoming critical days and peak windows