# 4. Preliminary AL al_pre = (lord_house + delta - 1) mod 12 + 1
Count the same number of houses forward from the Lagna Lord's position. This final house is your Arudha Lagna . Example Calculation Lagna: Virgo (1st House). Lagna Lord: Mercury. Placement: Mercury is in the 12th House. arudha lagna calculator
Better: From 4 to 1 forward (cyclic): 4,5,6,7,8,9,10,11,12,1 → that’s 9 steps? Let’s check formula: ( D = (1 - 4) \mod 12 = (-3) \mod 12 = 9 ). Yes, ( D = 9 ). Then ( AL_pre = 4 + 9 = 13 ), mod 12 = 1. So preliminary AL = 1st house. Example Calculation Lagna: Virgo (1st House)
While the Lagna is the foundation of the chart, the Arudha Lagna is the structure that the world sees. Better: From 4 to 1 forward (cyclic): 4,5,6,7,8,9,10,11,12,1
The calculation is based on the