Arudha Lagna Calculator High Quality May 2026

Let ( LordPos ) = house of Lagna lord (1..12). Let ( LagnaHouse = 1 ). ( D = ((1 - LordPos) \mod 12) ); if ( D == 0 ), ( D = 12 ). ( AL_pre = ((LordPos - 1 + D) \mod 12) + 1 ). If ( AL_pre == 1 ): ( AL = 10 ). Else if ( AL_pre == 7 ): ( AL = 4 ). Else ( AL = AL_pre ). End of paper. This paper can be used as both a theoretical introduction and a developer’s specification for building an accurate Arudha Lagna calculator.

# 4. Preliminary AL al_pre = (lord_house + delta - 1) mod 12 + 1 arudha lagna calculator

Exception: AL_pre == Lagna (1) → final AL = 10th house. Let ( LordPos ) = house of Lagna lord (1

# 3. Directional distance from lord to Lagna house (always forward in zodiac) delta = (1 - lord_house) mod 12 if delta == 0: delta = 12 ( AL_pre = ((LordPos - 1 + D) \mod 12) + 1 )