Rahu is probably the most dreaded planet of all and the irony is that it is not even a planet but a mere shadow. It is associated with many things and people interpret its results variedly. No two astrologers will be giving the same prediction usually for the same placement of Rahu or Ketu. I am going to talk about the placement of rahu and ketu with respect to the horoscope of time i.e. kaalpurusha's horoscope where Aries will fall in the first sign, Taurus in second and so on. One can correlate with his natal chart the effects of these two in his horoscope in houses and signs.
Rahu when in Libra will make Ketu in Aries. The native does not gives due importance to others and wants himself to be catered first of all. The native gets very rash at times and is usually impatient regarding all the things which matters to him. There is sudden explosion of feelings and words which finally hinder the peace of native only and none else. People some time tend to be away from such a person. The native is usually impulsive and act on the spur of the moment. Later on he does not feels any need of feedback of his actions.