- The Arudha of the 1st house is called Arudha Lagna.
- The Arudha of the 12th house is Upapada Lagna.
Calculation of Arudha PadasThe rule for Arudha calculation: count so many signs from the lord of a sign as the lord is away from the basic sign.Example: Second house is Capricorn, Saturn is in Pisces. So the distance from the underlying house (Cp) to Saturn is 3 signs. Count 3 signs from Pisces, so Taurus will be the Arudha of the second house.
The Role of the NodesRahu and Ketu play a special role in Jaimini astrology: they are co-lords of Aquarius (Rahu) and Scorpio (Ketu).So Rahu must be taken as lord of Aquarius if Rahu is stronger than Saturn. Same for Ketu: Ketu is the lord of Scorpio if Ketu is stronger than Mars.
Parasara's RuleParasara establishes that there are some exceptions from the above rule (fourth house rule).Rule: if the lord of the house is in the 1st, 4th, 7th or 10th house, 4 houses must be deducted from the result.
- Saturn is in the Ascendant in Capricorn. So the 1st house Arudha (or Arudha Lagna) will not be Capricorn but Libra.
- 4th house Arudha for Cancer Ascendant and Venus in Aries: Cancer will be the Arudha and not Libra.
Raman's RuleRaman and Shastri do not apply the fourth house rule for Arudha calculation.This rule can be configured in the configuration dialog (vedic calculation tab) of Maitreya.
Most Jaimini astrologers do not follow this rule.