What You'll Need
- Your city's sunrise time for today
- Current day of the week
- Calculator (or use GrahaGuru's Panchang)
Table of Contents
Understanding Rahu Kaal in Vedic Astrology
Rahu Kaal (also spelled Rahu Kalam or Rahu Kala) is a period of approximately 90 minutes each day that is considered inauspicious in Vedic astrology. During this time, Rahu - one of the nine planets (Navagraha) - is believed to exert negative influence.
In Hindu tradition, Rahu is a shadow planet (chhaya graha) associated with deception, confusion, and obstacles. Starting important activities during Rahu Kaal is believed to invite complications, delays, and unfavorable outcomes.
This guide teaches you how to calculate Rahu Kaal manually and how to use GrahaGuru's automatic calculator for accurate daily timings based on your location.
Find Today's Sunrise Time
Rahu Kaal is always calculated based on local sunrise time, not a fixed clock time. This is why Rahu Kaal varies from city to city.
To find accurate sunrise for your location:
- Check GrahaGuru's Panchang page
- Use a weather app with sunrise/sunset data
- Search "sunrise [your city]" on Google
For example, if sunrise in Delhi is 7:10 AM and in Mumbai it's 7:02 AM, the Rahu Kaal will start at different times in each city even though both are on the same day.
Vedic astrology divides the day into 8 equal parts from sunrise to sunset. Each part is ruled by a different planet. Rahu rules one specific part each day.
Know the Day Order
Each day of the week, Rahu Kaal falls in a different time segment. Memorize this sequence using the popular mnemonic "Mother Saw Father Wearing The Turban on Sunday":
- Monday (Mo): 2nd segment (7:30-9:00 AM approx.)
- Saturday (Sa): 3rd segment (9:00-10:30 AM approx.)
- Friday (Fa): 4th segment (10:30-12:00 PM approx.)
- Wednesday (We): 5th segment (12:00-1:30 PM approx.)
- Thursday (Th): 6th segment (1:30-3:00 PM approx.)
- Tuesday (Tu): 7th segment (3:00-4:30 PM approx.)
- Sunday (Su): 8th segment (4:30-6:00 PM approx.)
The times shown above are approximate for a 6 AM sunrise. Actual times depend on your location's sunrise.
Remember the sequence 7-8-2-3-5-6-4 for Sunday through Saturday. Or use "Mother Saw Father Wearing The Turban Sunday" where initials match weekday order.
Calculate Daytime Duration
To get precise Rahu Kaal timing, you need to calculate the segment duration:
- Note sunrise time: e.g., 6:30 AM
- Note sunset time: e.g., 6:30 PM
- Calculate total daylight: 12 hours (720 minutes)
- Divide by 8: 720 / 8 = 90 minutes per segment
In winter, when days are shorter (say 10 hours), each segment would be 75 minutes. In summer with 14-hour days, segments are about 105 minutes.
Rahu Kaal duration changes with seasons. It's longer in summer (longer days) and shorter in winter. This is why using a calculator is more accurate than memorizing fixed times.
Identify Rahu Kaal Segment
Now apply the day's sequence number to find exact timing:
Example for Monday (2nd segment):
- Sunrise: 6:30 AM
- Segment duration: 90 minutes
- 1st segment: 6:30 AM - 8:00 AM (Sun's period)
- 2nd segment: 8:00 AM - 9:30 AM (Rahu Kaal)
Example for Saturday (3rd segment):
- Sunrise: 6:30 AM
- 1st segment: 6:30 - 8:00 AM
- 2nd segment: 8:00 - 9:30 AM
- 3rd segment: 9:30 - 11:00 AM (Rahu Kaal)
Use GrahaGuru Calculator
For instant, accurate Rahu Kaal timing without manual calculation:
- Visit GrahaGuru's Panchang page
- Allow location access or select your city
- The page automatically displays today's Rahu Kaal
- Also shows other inauspicious periods: Yamaghanda, Gulika Kaal
GrahaGuru calculates based on Swiss Ephemeris data, ensuring astronomical accuracy for any location worldwide.
Bookmark the Panchang page for daily reference. It updates automatically with your timezone and shows all muhurta timings at a glance.
What to Avoid During Rahu Kaal
During Rahu Kaal, it's traditionally advised to avoid:
- Starting new businesses: Company registration, shop openings
- Financial transactions: Major purchases, investments, loans
- Beginning journeys: Especially long or important trips
- Signing contracts: Legal documents, agreements
- Auspicious ceremonies: Weddings, engagements, griha pravesh
- Medical procedures: Elective surgeries (emergency is fine)
- Job interviews: Or starting a new job
Activities Permitted During Rahu Kaal
Not everything needs to stop during Rahu Kaal. These activities are considered acceptable:
- Continuing work: Tasks started before Rahu Kaal
- Routine activities: Regular office work, daily chores
- Spiritual practices: Meditation, mantra chanting, Durga worship
- Emergency situations: Medical emergencies, urgent matters
- Completing tasks: Finishing what you've already begun
- Learning: Studying, reading, skill development
Some astrologers believe Rahu Kaal is actually favorable for unconventional activities, risky ventures, or dealing with foreign matters - areas Rahu governs positively.
Frequently Asked Questions
Rahu Kaal is a period of approximately 1.5 hours each day ruled by Rahu, a shadow planet in Vedic astrology. It is considered inauspicious for starting new ventures, signing contracts, or beginning important activities. Rahu Kaal occurs at different times each day based on the weekday and local sunrise.
During Rahu Kaal, avoid starting new businesses, signing important documents, beginning journeys, making major purchases, conducting marriage ceremonies, or starting any auspicious activities. However, routine tasks, continuing existing work, and spiritual practices can be done.
No, Rahu Kaal timing varies by location because it's based on local sunrise time. While the day sequence (which segment is Rahu Kaal) remains constant worldwide, the actual clock time differs. A person in Mumbai will have different Rahu Kaal timing than someone in Delhi.
Yes, certain activities are considered suitable: worship of Goddess Durga, meditation, spiritual practices, continuing ongoing work (not starting new), routine daily tasks, and activities that began before Rahu Kaal started. Some believe Rahu Kaal is actually good for unconventional or risky ventures.
Check Today's Rahu Kaal Instantly
Get accurate Rahu Kaal timing for your location with GrahaGuru's Panchang calculator.
View Today's Panchang