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Rahu Kalam Calculator

The day's inauspicious Rahu Kalam window, by weekday.

About

Sunrise to sunset is divided into eight equal parts, and one is assigned to Rahu by weekday. It is traditionally avoided for auspicious beginnings — starting a journey, a purchase, or an important conversation.

Frequently asked questions

What is Rahu Kalam?

Rahu Kalam is a recurring daily period considered inauspicious for starting new work. It is traditionally avoided for beginnings such as signing agreements, setting out on a journey or starting a ceremony, though ongoing work is not usually interrupted for it.

How is Rahu Kalam calculated?

The daylight span from sunrise to sunset is divided into eight equal parts, and one of those parts is assigned to it. Which part depends on the weekday, so the window moves through the day across the week.

Does Rahu Kalam change by city?

Yes. The window is derived from local sunrise and sunset, so it shifts with both the date and the latitude/longitude of the place you enter.