The Rahu kaal is calculated by dividing the day hours (from sunrise to sunset) into 8 sections, where each day has 1.5 hour duration allocated to the shadow planet ‘Rahu’ of Indian astrology.
Rahu is considered to have malefic influence based on our Karma. So, it is not a recommend time to start any new activities during this time. Many of the orthodox followers of astrology may even recommend not to execute important tasks or decisions during this time.
Time Duration :
In India there is a practice of checking auspicious time for performing any new initiative related to official and personal work. While checking for a good time based on panchang (panchangam in Tamil) and Hora concepts of Vedic astrology, people usually avoid the time of Rahu Kaal (also referred as Rahukaalam).
This Rahu Kaal period varies based on the sun rise and the sun set timings.
After the day light, hours are divided in 8 sections. The following is the allocation of time for Rahu Kaal.
Star matching calculator for marriage compatibility (i.e., nakshatra / rasi compatibility calculator) feature of Astrograha helps in determining the potential compatibility between a Boy and Girl for marriage. South Indians mostly check compatibitliy based on 10 porutham and North Indians mostly use 36 point score system.
The birth chart calculator of Astrograha provides a basic birth chart that shows all the planetary placement, ascendant / lagnam, rashi and nakshatra details for a person by using the time of birth at a specific location. It includes calculating mangal dosha (chevvai dosham). The generated report can be printed using the print feature.