Which weekday has the earliest Rahu Kaal in the day?

Monday, when Rahu Kaal falls in the 2nd of the 8 daylight segments — shortly after sunrise.

Which weekday has the latest Rahu Kaal?

Sunday, when it falls in the 8th and final daylight segment, ending right at sunset.

Does Rahu Kaal occur at night?

No — Rahu Kaal is defined only within the daylight span (sunrise to sunset), divided into 8 equal segments; it doesn't have a night-time counterpart the way Choghadiya does.

What determines which segment is Rahu Kaal on a given day?

A fixed weekday-based rule — each of the 7 weekdays maps to one specific segment number (1-8) counted from sunrise, verified against multiple published Rahu Kalam reference tables.

Do I need exact planetary positions for Rahu Kaal?

No — despite being named after the shadow-planet Rahu, the calculation is purely mechanical: divide daylight into 8 equal parts and look up the segment for that weekday. No ephemeris data beyond sunrise/sunset is used.

How long does Rahu Kaal typically last?

About 1/8th of the daylight span for your location and date — roughly 90 minutes on a 12-hour daylight day, though it varies with season and latitude.

Can Rahu Kaal fall in a different segment for the same weekday in different cities?

No — the weekday-to-segment mapping is fixed, but the actual clock time differs by city because each city's sunrise/sunset times differ.

Are Rahu Kaal times the same across all Hindu traditions and regions?

The 8-segment method used here is the widely-published mainstream convention; a few regional traditions apply minor variations, so always cross-check with a local source for high-stakes decisions.

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Rahu Kaal Calculator

Today's traditionally inauspicious Rahu Kaal window for any location.

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Last reviewed 2026-09-06

About the Rahu Kaal Calculator

Computes today's Rahu Kaal — a traditionally inauspicious daily period — for any location.

100% Free Runs in Your Browser No Sign-Up Required

How to use it

Select your location.
Enter the date.
Read the Rahu Kaal start and end time.

Formula

Daylight (sunrise to sunset) is divided into 8 equal segments; a fixed segment number is used for each weekday (verified against multiple real published Rahu Kalam tables for several 2026 dates before shipping).

Worked example

On a Monday, Rahu Kaal occupies the 2nd of the 8 daylight segments — an earlier-in-the-day window than on a Sunday (8th segment, right before sunset).

Rahu Kaal segment by weekday (of 8 equal daylight segments, counted from sunrise)

Rahu Kaal segment by weekday (of 8 equal daylight segments, counted from sunrise)
Weekday	Rahu Kaal segment (1-8)
Sunday	8
Monday	2
Tuesday	7
Wednesday	5
Thursday	6
Friday	4
Saturday	3

Interpreting your result

A purely mechanical calculation — no planetary positions are needed beyond sunrise and sunset for your specific location and date.

Recommendations

• Many people specifically avoid starting new ventures, travel, or important transactions during Rahu Kaal — routine activities are not affected by this tradition.

Frequently asked questions

No — since it's a fixed fraction of that day's actual daylight span, its clock time shifts throughout the year as sunrise/sunset times change, and it varies by weekday and location too.