Rahu Kaal Calculator
Rahu Kaal Today
आज का राहु काल
Tuesday, 4 August 2026 · मंगलवार
Calculated for Chennai, 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
Chennai Rahu Kaal — चेन्नई राहु काल
State
Tamil Nadu
Sunrise Range
5:46–6:39 AM
Coordinates
13.08°N, 80.27°E
Chennai, Tamil Nadu's capital. Kapaleeshwarar Temple, Parthasarathy Temple, and Ashtalakshmi Temple are the city's sacred anchors. Pongal (Tamil harvest festival), Tamil New Year (Puthandu), and Karthigai Deepam are major festivals. Tamils have a rich Panchanga tradition — the Tamil Panchangam is consulted alongside Hindi almanacs for auspicious timings.
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 Chennai, the exact timing of Rahu Kaal shifts with the seasonal sunrise time. During summer months when the sun rises early (around 5:46), Rahu Kaal starts earlier. During winter months, it starts later. The live calculator above is automatically calibrated to Chennai's exact latitude and longitude for the most accurate timing.
Chennai's solar year — sunrise, sunset and day length
In Chennai the longest day runs 12h 46m (June) and the shortest 11h 14m (December) — a seasonal swing of 1h 32m. Solar noon falls +9m from the 12:00 clock hour because Chennai sits at 80.27°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 | 06:39 | 17:58 | 11h 19m | 12:18 | — |
| February | 06:35 | 18:11 | 11h 36m | 12:23 | +17m |
| March | 06:20 | 18:16 | 11h 56m | 12:18 | +20m |
| April | 06:00 | 18:18 | 12h 18m | 12:09 | +22m |
| May | 05:47 | 18:24 | 12h 36m | 12:05 | +18m |
| June | 05:46 | 18:32 | 12h 46m | 12:09 | +10m |
| July | 05:54 | 18:36 | 12h 42m | 12:15 | −4m |
| August | 06:00 | 18:27 | 12h 27m | 12:13 | −15m |
| September | 06:01 | 18:07 | 12h 05m | 12:04 | −22m |
| October | 06:03 | 17:47 | 11h 44m | 11:55 | −21m |
| November | 06:11 | 17:36 | 11h 24m | 11:53 | −20m |
| December | 06:27 | 17:41 | 11h 14m | 12:04 | −10m |
Which places near Chennai can read these Rahu Kaal timings
Nerkunram lies 7 km west of Chennai 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 0m to +1m 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 |
|---|---|---|---|---|
| Nerkunram | 7 km | west | 0m to +1m | same |
| Madhavaram | 8 km | north-west | 0m to +1m | same |
| Tiruvottiyur | 9 km | north | same | same |
| Manali | 9 km | north | same | same |
| Virugambakkam | 10 km | south-west | 0m to +1m | same |
| Mathur | 10 km | north | 0m to +1m | same |
| Nalambur | 11 km | west | 0m to +1m | same |
| Ramapuram | 11 km | south-west | 0m to +1m | same |
| Alandur | 11 km | south-west | 0m to +1m | same |
| Valasaravakkam | 12 km | west | 0m to +1m | same |
| Puzhal | 12 km | north-west | 0m to +1m | same |
| Maduravoyal | 12 km | west | 0m to +1m | same |
| Ambattur | 12 km | west | 0m to +1m | same |
| Saint Thomas Mount | 12 km | south-west | 0m to +1m | same |
| Kotivakkam | 13 km | south | 0m to +1m | same |
| Porur | 13 km | south-west | 0m to +1m | same |
| Mugalivakkam | 13 km | south-west | 0m to +1m | same |
| Perungudi | 14 km | south | 0m to +1m | same |
| Ullagaram | 14 km | south-west | 0m to +1m | same |
| Palavakkam | 14 km | south | 0m to +1m | same |
Chennai Festivals & Rahu Kaal Awareness
During Chennai's major festivals — Pongal, Tamil New Year, Karthigai Deepam — 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 Chennai?
Rahu Kaal in Chennai changes daily based on the day of the week and actual sunrise time. Chennai's sunrise ranges from 5:46–6:39 AM across the year. The calculator above shows today's exact Rahu Kaal for Chennai's coordinates (Tamil Nadu). 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 Chennai?
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. Chennai residents commonly use this calculator before scheduling important appointments.
Can nearby towns like Nerkunram use Chennai's Rahu Kaal timings?
Almost, with a small shift. Nerkunram lies 7 km west of Chennai 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 Chennai that shift stays between 0m and +1m 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 Chennai's slot.
Is Rahu Kaal the same across all Indian cities including Chennai?
No. Rahu Kaal is calculated based on local sunrise time, which differs across India. Chennai's sunrise (5:46–6:39 AM) differs from cities in other time zones within India. Using a city-specific Rahu Kaal calculator like this one, calibrated to Chennai's exact coordinates, gives accurate results.