Vedic Astrology texts say that native suffers or dies when the lord of 8th house or 8th navansha or 64th navansha or 87th navansha or 22th drekkana lord or lord of Vainashik nakshatra or marak planets transit over these points or Saturn transits or Rahu transits over it . When lord of 64th navansha and 22nd drekkana are same planet, then death is certain when strongest in above marak planets transit over it.
Rajiv Gandhi was assassinated on 21 may 1991, he was running Rahu-Ketu-Mercury period. From his natal moon vainashik nakshatra lord is Moon who is in 12th house in Natal chart. From his natal moon, Nidhan nakshatra lord is Saturn. From Ascendent Vainashik nakshatra lord is Rahu and Nidhan nakshatra lord is Ketu both were in Dasha. Marak Jupiter is in Nidhan nakshatra. Jupiter and Venus are his major marak planets. Moon is in Leo 12th house in the nakshatra of Venus and conjunct with Venus. Moon is lord of his 87th navansha. Saturn is seated in Vainashik nakshtra.

At the time of assassination the Moon was transiting in the nakshatra owned by marak Venus in which he was born in. The vainashik nakshatra lord Rahu was transiting over 22th drekkana, lord of 22th drekkana Jupiter who is also marak was transiting over 87th navansha with 64th navansha lord, Marak Venus was transiting over Vainashik nakshatra in Pisces navansha and lord of lagan was transiting over 64th navansha. Saturn the lord of death was aspecting lord of 64th navansha and 22nd drekkan and was debilitated in 8th in Aries navansha. He was assassinated by women which his marak Venus represents.