Rahu Kaal Calculator
Today's inauspicious window — avoid starting anything important then.
Rahu Kaal is a roughly 90-minute window every day, at a fixed position within the daylight hours depending on the weekday, classically considered inauspicious for starting new ventures. Enter your city to see today's exact Rahu Kaal window.
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How Rahu Kaal's timing is fixed
Sunrise-to-sunset is split into 8 equal parts, and Rahu Kaal always falls in a specific one of those 8 slots depending on the weekday — for example the 8th slot (just before sunset) on a Saturday, or the 2nd slot on a Monday. Because daylight length itself varies by season and location, the actual clock time shifts day to day even though the rule generating it never changes.
Frequently asked questions
Is Rahu Kaal the same time every day?
No — it's a fixed position within the 8-part division of daylight hours for each weekday, but daylight hours themselves shift by season and location, so the clock time changes.
What should be avoided during Rahu Kaal?
Classical guidance discourages starting new, significant undertakings during this window — travel, launches, ceremonies — though it's not considered a blanket ban on ordinary daily activity.