Daily Panchang Tool
Rahu Kaal Calculator
Calculate Rahu Kaal for a selected date and location using local sunrise and sunset. Results are shown in the selected location's time zone.
Choose date and location
Your Rahu Kaal result
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Daylight timeline
The eight equal daylight segments are shown below. The highlighted block is the traditional Rahu Kaal segment for this weekday.
All eight daylight segments
| Segment | Start | End | Status |
|---|
Times are calculated from the sunrise-to-sunset interval and rounded to the nearest minute for display. Internal interval arithmetic retains millisecond precision.
Traditional interpretation
In Hindu astrological tradition, Rahu Kaal is commonly treated as a period to avoid beginning certain important activities. This is a traditional religious and cultural belief; the calculator does not establish or predict scientific outcomes.
What is Rahu Kaal?
Rahu Kaal, also written as Rahu Kalam, is a daily period identified in Hindu astrological and Panchang traditions. Its timing changes with the weekday and the length of daylight at a particular location. People may consult it as one part of a broader traditional calendar; customs and interpretations can vary by region and Panchang.
How is Rahu Kaal calculated?
This calculator obtains sunrise and sunset for the chosen coordinates and date. It calculates daylight duration, divides that interval into eight equal segments, and selects the segment assigned to the local weekday. The standard weekday mapping is:
| Weekday | Rahu Kaal segment |
|---|---|
| Sunday | 8 |
| Monday | 2 |
| Tuesday | 7 |
| Wednesday | 5 |
| Thursday | 6 |
| Friday | 4 |
| Saturday | 3 |
For segment number N, its start is sunrise plus (N − 1) segment durations, and its end is sunrise plus N segment durations. The calculation uses local solar events rather than a fixed timetable.
Why do Rahu Kaal timings change by location and date?
Sunrise and sunset vary with latitude, longitude, season, and date. Time zones and daylight saving time affect how those instants appear on a clock, although they do not change the underlying astronomical instants. For that reason, a fixed Rahu Kaal timetable for one city should not be treated as exact for another city or another date.
How to use this calculator
- Search for a city and select the matching location, or enter latitude and longitude manually.
- Choose the calendar date at the selected location.
- Leave the time-zone field blank for automatic lookup, or enter a valid IANA time zone if you know it.
- Press Calculate Rahu Kaal to view the interval, sunrise, sunset, daylight duration, and all eight segments.
Frequently asked questions
Can I calculate Rahu Kaal outside India?
Yes. Select a location anywhere the services can resolve coordinates and a time zone, or enter coordinates and a valid IANA time zone manually. The calculator uses that location's sunrise and sunset.
Why is my result different from a Panchang website?
Sources may use different sunrise conventions, location coordinates, rounding rules, or regional Panchang conventions. Compare the exact location and date, and consult a trusted local Panchang if you follow a specific tradition.
What happens in places without a normal sunrise or sunset?
In polar or other unusual solar conditions, a normal sunrise or sunset may not occur for the selected date. This calculator reports that it cannot calculate a standard daylight segment rather than inventing a time.
Does this calculator prove that activities during Rahu Kaal will have bad results?
No. Rahu Kaal is part of a traditional astrological practice. This tool calculates the traditional time interval and does not establish scientifically proven effects or guarantee outcomes.
Privacy note: when you search for a place or use your location, the city query or coordinates may be sent to OpenStreetMap Nominatim and TimeAPI.io to resolve the location and time zone. The astronomy library is loaded from jsDelivr. Review the services' policies before use: Nominatim usage policy, TimeAPI information. Location search data © OpenStreetMap contributors. These external services may be unavailable or may change their terms; results are only displayed when required data is returned.
