Bhav Madhya Tropical
The Bhav Madhya Tropical API computes the midpoint of each of the 12 astrological houses using the tropical (Western) zodiac system. In Western astrology, the tropical zodiac is anchored to the vernal equinox rather than the fixed stars, making this endpoint the standard choice for Western chart construction and interpretation.
Bhav Madhya — literally "house middle" — refers to the exact central degree of each house. This midpoint is considered the most powerful and sensitive point within a house, representing where the themes of that house are most strongly expressed.
What Data It Returns
For each of the 12 houses, the API returns three positional points — the start cusp, the midpoint (Bhav Madhya), and the end cusp — each expressed as:
- An absolute degree on the 360° ecliptic (
full_degree)
- A degree formatted in degrees, minutes, and seconds (
formatted_deg)
- A degree normalized within its zodiac sign (0°–30°,
norm_deg)
- The zodiac sign occupying that degree, including its name, key, numeric ID, and Unicode symbol
In addition to the house table, the response includes:
- Ascendant — the rising degree at the time and location provided, which anchors the entire house system
- Midheaven (MC) — the highest point of the ecliptic, corresponding to the cusp of the 10th house
- Ayanamsha — the ayanamsha value applied during calculation (relevant when cross-referencing with sidereal systems)
Main Use Cases
- Western natal chart construction — determining the precise house structure for a birth chart using the tropical zodiac
- Transit and progression analysis — identifying which house a transiting planet activates based on its current degree
- House strength assessment — locating the Bhav Madhya to evaluate the potency of planetary placements within each house
- Comparative chart systems — building applications that support both tropical and sidereal house calculations side by side
- Astrology software and apps — powering chart rendering engines that need accurate house cusp and midpoint data for display
Key Functionality
- Calculates house positions using the tropical zodiac, where 0° Aries aligns with the vernal equinox
- Returns a complete 12-house Bhav table covering all houses from the Ascendant through the 12th house
- Each house entry includes the start, mid, and end degree with full sign attribution, enabling precise placement of planets within houses
- Supports any geographic location and timezone, making it suitable for charts cast anywhere in the world
- The Ascendant and Midheaven are returned alongside the house table, providing the two primary chart angles needed for full chart interpretation
- Degree values are provided in both raw decimal format and human-readable
DDD:MM:SS notation for flexible downstream use
