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Divination
Rahu Kaal (Rahu Kalam) is an inauspicious period ruled by Rahu. These timings are calculated from your city's actual sunrise and sunset — not fixed approximations.
The day (sunrise to sunset) is split into 8 equal parts. The Rahu Kaal falls on different periods depending on the weekday:
Sunday
8th period
Monday
2th period
Tuesday
7th period
Wednesday
5th period
Thursday
6th period
Friday
4th period
Saturday
3th period
Rahu Kaal is approximately 90 minutes each day when the shadow planet Rahu holds influence. It is considered inauspicious in Vedic astrology for starting new ventures, signing contracts, or beginning journeys.
The timing is derived by dividing the daytime (sunrise to sunset) into 8 equal parts. The Rahu Kaal slot varies by weekday: Monday (2nd), Saturday (3rd), Friday (4th), Wednesday (5th), Thursday (6th), Tuesday (7th), and Sunday (8th period).
Since sunrise and sunset change daily with the seasons and by geographic location, the exact Rahu Kaal window shifts accordingly. Our calculator uses astronomical sunrise/sunset from NASA JPL data for each city.