Rahu Kaal Calculator
Rahu Kaal Today
आज का राहु काल
Tuesday, 4 August 2026 · मंगलवार
Calculated for Patna, India using Swiss Ephemeris
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Calculated with Swiss Ephemeris on the Lahiri ayanamsa - the same method a traditional Jyotishi follows.
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Ruled by Yama · Avoid travel
Ruled by Saturn · Avoid auspicious work
Today's Panchang Summary
Weekly Rahu Kaal Reference
Weekly Rahu Kaal Reference
Approximate times based on 6:00 AM sunrise. Use the calculator above for exact timings.
About Rahu Kaal(राहु काल के बारे में)
About Rahu Kaal(राहु काल के बारे में)
Rahu Kaal (राहु काल) is one of the three inauspicious daily periods in Vedic astrology, alongside Yamagandam and Gulika Kaal. It lasts approximately 90 minutes each day and is ruled by the shadow planet Rahu — the north node of the Moon. Most Hindus avoid starting new ventures, signing documents, or beginning journeys during this period.
The timing of Rahu Kaal changes every day because it depends on the day of the week and your local sunrise and sunset times. Our calculator uses the same astronomical engine (Swiss Ephemeris with Lahiri Ayanamsa) as the Muhurat Calculator and Daily Panchang to give you precise, location-aware timings.
For a complete picture of auspicious and inauspicious timings throughout the day, including hourly Muhurat analysis, visit our Shubh Muhurat page.
More Free Calculators
Patna Rahu Kaal — पटना राहु काल
State
Bihar
Sunrise Range
5:02–6:41 AM
Coordinates
25.59°N, 85.14°E
Patna, the historic capital of Bihar. Patna Sahib Gurudwara, Mahavir Mandir, and Patna Devi Temple are the city's revered pilgrimage centers. Chhath Puja is Bihar's most sacred festival — its solar worship is deeply connected to sunrise and sunset timings. The Panchanga is integral to Bihari cultural life.
What is Rahu Kaal?
Rahu Kaal (राहु काल) is the period of approximately 90 minutes each day that is governed by Rahu, the north lunar node. According to Vedic tradition, activities initiated during Rahu Kaal are prone to unexpected obstacles, delays, and complications due to Rahu's shadow nature. This inauspicious period divides the daylight hours (sunrise to sunset) into 8 equal parts, with Rahu ruling a different part on each day of the week.
In Patna, the exact timing of Rahu Kaal shifts with the seasonal sunrise time. During summer months when the sun rises early (around 5:02), Rahu Kaal starts earlier. During winter months, it starts later. The live calculator above is automatically calibrated to Patna's exact latitude and longitude for the most accurate timing.
Patna's solar year — sunrise, sunset and day length
In Patna the longest day runs 13h 35m (June) and the shortest 10h 25m (December) — a seasonal swing of 3h 10m. Solar noon falls −10m from the 12:00 clock hour because Patna sits at 85.14°E rather than on the 82.5°E IST meridian. Every Tithi, Nakshatra and Rahu Kaal window on this page is derived from that sunrise, not from a national average.
| Month | Sunrise | Sunset | Day length | Solar noon | Change |
|---|---|---|---|---|---|
| January | 06:41 | 17:16 | 10h 35m | 11:59 | — |
| February | 06:28 | 17:39 | 11h 11m | 12:04 | +36m |
| March | 06:03 | 17:54 | 11h 52m | 11:59 | +41m |
| April | 05:31 | 18:09 | 12h 38m | 11:50 | +46m |
| May | 05:08 | 18:24 | 13h 15m | 11:46 | +37m |
| June | 05:02 | 18:38 | 13h 35m | 11:50 | +20m |
| July | 05:12 | 18:39 | 13h 27m | 11:55 | −8m |
| August | 05:26 | 18:21 | 12h 55m | 11:54 | −32m |
| September | 05:39 | 17:50 | 12h 11m | 11:45 | −44m |
| October | 05:52 | 17:19 | 11h 27m | 11:35 | −44m |
| November | 06:11 | 16:57 | 10h 46m | 11:34 | −41m |
| December | 06:32 | 16:57 | 10h 25m | 11:44 | −21m |
Which places near Patna can read these Rahu Kaal timings
Phulwari Sharif lies 7 km west of Patna and sees sunrise 0m to +1m against it, so the Rahu Kaal window computed above moves by just that much there. Across every place listed below the shift runs −2m to +2m and each of the eight daylight periods keeps the same length it has here, so the periods do not stretch — only the boundary moves.
| Nearby place | Distance | Direction | Sunrise vs here | Period length |
|---|---|---|---|---|
| Phulwari Sharif | 7 km | west | 0m to +1m | same |
| Khagaul | 9 km | west | 0m to +1m | same |
| Dinapur Nizamat | 10 km | north-west | 0m to +1m | same |
| Dinapore | 10 km | north-west | 0m to +1m | same |
| Sonepur | 12 km | north | −1m to 0m | same |
| Hajipur | 13 km | north-east | −1m to 0m | same |
| Dinapur Cantonment | 13 km | west | 0m to +1m | same |
| Fatwa | 19 km | south-east | −1m to 0m | same |
| Naubatpur | 21 km | south-west | 0m to +1m | same |
| Dighwara | 21 km | north-west | 0m to +1m | same |
| Bihta | 27 km | west | +1m to +2m | same |
| Maner | 27 km | west | +1m to +2m | same |
| Masaurhi Buzurg | 29 km | south | 0m to +1m | same |
| Lalganj | 31 km | north | −1m to +1m | same |
| Bikram | 32 km | south-west | +1m to +2m | same |
| Hilsa | 34 km | south-east | −1m to 0m | same |
| Koelwar | 34 km | west | +1m to +2m | same |
| Mahnar Bazar | 35 km | east | −2m to −1m | same |
| Bakhtiyarpur | 42 km | east | −2m to −1m | same |
| Bakhtiarpur | 43 km | east | −2m to −1m | same |
Patna Festivals & Rahu Kaal Awareness
During Patna's major festivals — Chhath Puja, Ram Navami, Makar Sankranti — traditional families carefully avoid initiating new rituals during Rahu Kaal. Pujas, yajnas, and auspicious ceremonies are timed to begin in Amrit or Shubh Choghadiya periods. The Rahu Kaal calculator is one of the most consulted tools during festival seasons.
Frequently Asked Questions
What is today's Rahu Kaal in Patna?
Rahu Kaal in Patna changes daily based on the day of the week and actual sunrise time. Patna's sunrise ranges from 5:02–6:41 AM across the year. The calculator above shows today's exact Rahu Kaal for Patna's coordinates (Bihar). Rahu Kaal lasts approximately 90 minutes each day and occurs at different times depending on the weekday.
Which activities should be avoided during Rahu Kaal in Patna?
During Rahu Kaal, traditionally avoid: starting new businesses or ventures, purchasing property, signing legal documents, beginning travel (especially long-distance), conducting marriage ceremonies, or beginning important medical treatments. Emergency activities, routine work, worship, and ongoing tasks are not affected by Rahu Kaal. Patna residents commonly use this calculator before scheduling important appointments.
Can nearby towns like Phulwari Sharif use Patna's Rahu Kaal timings?
Almost, with a small shift. Phulwari Sharif lies 7 km west of Patna and sees sunrise 0m to +1m against it, so the Rahu Kaal window computed above moves by just that much there. Across the recorded places within 150 km of Patna that shift stays between −2m and +2m through the year — the nearby-place table above lists each one. For a town whose shift runs past a few minutes, compute with its own coordinates instead of copying Patna's slot.
Is Rahu Kaal the same across all Indian cities including Patna?
No. Rahu Kaal is calculated based on local sunrise time, which differs across India. Patna's sunrise (5:02–6:41 AM) differs from cities in other time zones within India. Using a city-specific Rahu Kaal calculator like this one, calibrated to Patna's exact coordinates, gives accurate results.