Arudha Lagna Calculator -

# 5. Apply exceptions if al_pre == 1: # Lagna itself al_final = 10 elif al_pre == 7: # 7th from Lagna al_final = 4 else: al_final = al_pre

Let ( D = Pos_Lord \to H_L ) (forward count in zodiac order, not retrograde). ( D = (H_L - Pos_Lord) \mod 12 ); if result = 0, set ( D = 12 ). arudha lagna calculator

# 4. Preliminary AL al_pre = (lord_house + delta - 1) mod 12 + 1 Let ( LagnaHouse = 1 )

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

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.