Rahu Kaal Calculator
Calculate today's inauspicious Rahu Kaal for any city. Avoid this period for new beginnings, important decisions, and auspicious ceremonies.
What is Rahu Kaal? The Science Behind the Inauspicious Period
Rahu Kaal (also spelled Rahu Kal, Rahu Kalam, or Rahu Kalaam) is a specific period of approximately 90 minutes each day that is considered inauspicious in Vedic astrology. The word "Kaal" comes from Sanskrit, meaning "time" - specifically unfavourable time. This daily window is governed by Rahu, one of the nine Navagrahas (celestial bodies) in Hindu astrology.
Rahu is not a physical planet but a shadow body - the north lunar node, the point where the Moon's orbit crosses the ecliptic (the Sun's apparent path). In Hindu mythology, Rahu is depicted as a demon's severed head that swallows the Sun or Moon, causing eclipses. This fearsome imagery reflects Rahu's nature: disruptive, unpredictable, and capable of obscuring the light of reason.
The Vedic day is divided into 8 equal segments between sunrise and sunset. Each segment is approximately 90 minutes long (though it varies by location and season, since day length changes throughout the year). One of these 8 segments belongs to Rahu, and that segment shifts depending on the day of the week. The calculation is based on the specific weekday's ruling planet and the segments assigned to Rahu by classical Vedic texts.
The formula ensures that Rahu Kaal never falls in the first segment of the day. This is because the day's first segment is ruled by the lord of that weekday (e.g., Sunday is ruled by the Sun), and Rahu is assigned later segments. Our calculator uses precise sunrise and sunset data for your specific location, giving you accurate Rahu Kaal timing adjusted for your latitude, longitude, and the date you choose.
Rahu Kaal by Day of Week - Standard Timings
The following table shows the approximate Rahu Kaal timings for a standard day with sunrise at 6:00 AM and sunset at 6:00 PM (12-hour day). These are reference timings for central India / IST. Your actual Rahu Kaal will differ based on your city's sunrise and season - use the calculator above for precise results.
| Day | Approx. Rahu Kaal (6 AM–6 PM day) | Segment No. | Mnemonic |
|---|---|---|---|
| Sunday | 4:30 PM – 6:00 PM | 8th (last) | Mother Saw Father Wearing The Turban Slowly |
| Monday | 7:30 AM – 9:00 AM | 2nd | 7 = Monday segment 2 |
| Tuesday | 3:00 PM – 4:30 PM | 7th | |
| Wednesday | 12:00 PM – 1:30 PM | 5th | |
| Thursday | 1:30 PM – 3:00 PM | 6th | |
| Friday | 10:30 AM – 12:00 PM | 4th | |
| Saturday | 9:00 AM – 10:30 AM | 3rd |
A popular mnemonic used in South India to remember the sequence: "Mother Saw Father Wearing The Turban Slowly" - the first letter of each word gives the day order (Mon, Sun, Fri, Wed, Thu, Tue, Sat) for Rahu Kaal progression.
Why Should You Avoid Rahu Kaal?
Rahu in Vedic astrology represents illusion (Maya), deception, materialism, sudden events, foreigners, and unconventional thinking. When Rahu governs a period of the day, these qualities are amplified, making it unfavourable for activities that require clarity, stability, and positive cosmic support. Here is a detailed look at why specific activities should be avoided:
New Business Ventures
Rahu's disruptive energy can cause confusion, misrepresentation, and unexpected obstacles that undermine a new venture from the start.
Auspicious Travel
Travel begun during Rahu Kaal may face delays, accidents, or unexpected detours. Long-distance travel is particularly vulnerable to Rahu's unpredictable influence.
Marriage & Engagement
Rahu brings instability to relationships begun under its shadow. Marriage ceremonies and engagement rituals traditionally require the blessing of auspicious grahas, which are suppressed during Rahu Kaal.
Signing Contracts
The deceptive quality of Rahu can cause hidden clauses, misunderstandings, or fraudulent elements in contracts signed during this period.
Medical Surgery
Unless it is an emergency, elective surgery during Rahu Kaal carries heightened risk of complications. Rahu rules over sudden events that are difficult to foresee or control.
Property & Vehicle Purchase
Property or vehicles acquired during Rahu Kaal may bring hidden defects, legal complications, or ongoing maintenance issues.
What Can You Do During Rahu Kaal?
While Rahu Kaal is inauspicious for new beginnings, it is not a time of absolute prohibition. Many everyday activities can continue without issue. In fact, Rahu Kaal carries specific benefits for Rahu-related spiritual practices:
- Rahu Mantra Chanting: The period governed by Rahu is the most powerful time to chant Rahu's beej mantra: "Om Bhram Bhreem Bhroum Sah Rahave Namah" (108 times). This can transform Rahu's energy from harmful to beneficial.
- Donation for Rahu: Donating black sesame seeds, blue or black cloth, iron items, or blankets to the needy during Rahu Kaal is considered highly effective as a remedy for Rahu's malefic influence in one's birth chart.
- Routine and Ongoing Work: Tasks that are already underway - writing reports, attending meetings in progress, finishing existing projects - are generally safe during Rahu Kaal since they do not constitute 'new beginnings.'
- Emergency Actions: Life-saving medical procedures, emergencies, and unavoidable urgent tasks are not subject to Rahu Kaal restrictions. Human life always takes precedence.
- Meditation and Spiritual Study: Rahu rules the spiritual seeker and the quest for transcendence. Meditation, especially for those seeking liberation (Moksha), can be powerful during this time.
Rahu Kaal for Different Cities Across India
Rahu Kaal timing is not the same across India or the world. It depends entirely on the local sunrise and sunset times, which vary significantly by latitude and longitude. A city at a higher latitude experiences longer summer days and shorter winter days, which shifts all 8 Kaal segments. Here is a comparison for major Indian cities on a typical day:
| City | Latitude | Approx. Sunrise | Monday Rahu Kaal (Approx.) |
|---|---|---|---|
| Mumbai | 18.9°N | 6:10 AM | 7:48 AM – 9:17 AM |
| Delhi | 28.6°N | 5:50 AM | 7:25 AM – 8:57 AM |
| Chennai | 13.1°N | 6:10 AM | 7:47 AM – 9:16 AM |
| Kolkata | 22.6°N | 5:20 AM | 6:54 AM – 8:27 AM |
| Bengaluru | 12.9°N | 6:12 AM | 7:49 AM – 9:18 AM |
| Hyderabad | 17.4°N | 6:07 AM | 7:44 AM – 9:13 AM |
Note: These are approximate values for a summer day. Use the calculator above for precise daily timings for any city worldwide.
Remedies to Nullify Rahu's Negative Effects
If you must perform an important task during Rahu Kaal, or if Rahu is malefic in your birth chart, these classical Vedic remedies can help reduce its negative effects:
Worship Lord Ganesha
Begin any task by praying to Ganesha, the remover of obstacles, to counteract Rahu's disruptive influence. Chant 'Om Gam Ganapataye Namah' 21 times.
Chant Rahu Mantra
Chant the beej mantra 'Om Bhram Bhreem Bhroum Sah Rahave Namah' 108 times during Rahu Kaal to convert the energy for your benefit.
Donate During Rahu Kaal
Donating black sesame, mustard oil, urad dal, iron, or navy-blue cloth to the poor during this time is a powerful Rahu remedy.
Wear Hessonite (Gomed)
Those with Rahu mahadasha or problematic Rahu in their natal chart can wear a Hessonite gemstone after proper astrological consultation.
Durga Saptashati Recitation
Reading or listening to Durga Saptashati during Rahu Kaal is said to create a protective shield against Rahu's malefic effects.
Feed Crows
In Hindu tradition, crows are associated with Saturn and Rahu. Feeding crows (especially on Saturdays) is a traditional remedy for both Rahu and Shani doshas.
Frequently Asked Questions About Rahu Kaal
What is Rahu Kaal and why is it inauspicious?
Rahu Kaal is a daily period of approximately 90 minutes governed by Rahu, the north lunar node. In Vedic astrology, Rahu is associated with illusion, deception, sudden disruptions, and materialism. Any new venture or auspicious activity started during this window may be affected by these negative qualities. The exact duration and timing change each day based on your location's sunrise and sunset.
How is Rahu Kaal calculated?
The day between sunrise and sunset is divided into 8 equal segments. Each segment is assigned to a planet. One of these 8 segments is ruled by Rahu, and the specific segment changes by the day of the week. For Sunday it is the 8th segment, Monday the 2nd, Tuesday the 7th, Wednesday the 5th, Thursday the 6th, Friday the 4th, and Saturday the 3rd. Our calculator uses precise solar position data to determine exact sunrise and sunset for your location.
Is Rahu Kaal the same every day?
No. While the weekday pattern for which segment belongs to Rahu stays constant, the actual clock time changes every day because sunrise and sunset shift throughout the year. In winter, sunrise is later and the day is shorter, so Rahu Kaal shifts forward. In summer, with earlier sunrises and longer days, the timing also changes. Additionally, the timing varies significantly by city - Mumbai and Delhi can differ by 20-30 minutes.
What if I cannot avoid Rahu Kaal for an important task?
If you absolutely must act during Rahu Kaal, classical remedies include first praying to Lord Ganesha (chanting 'Om Gam Ganapataye Namah' 21 times), then chanting Rahu's beej mantra 108 times. You can also begin the preparation or 'sankalpa' (intention) of the task before Rahu Kaal starts, and merely execute it during Rahu Kaal, as the inauspicious timing applies primarily to new initiations.
Does Rahu Kaal apply at night?
Traditional Rahu Kaal applies only during the daytime - between sunrise and sunset. The nighttime has its own set of inauspicious periods (Yamaganda Kaal, Gulika Kaal during night hours) but Rahu Kaal specifically refers to the daytime segments. If you work night shifts, the equivalent daytime Rahu Kaal for the solar date is still used for astrological planning purposes.
Is Rahu Kaal the same in South India and North India?
The segment formula (which weekday has which Rahu Kaal segment) is universal across all Hindu traditions. However, the emphasis on Rahu Kaal is particularly strong in South India, especially in Tamil Nadu, Karnataka, Kerala, and Andhra Pradesh, where it is observed very strictly. In North India, Rahu Kaal is known but observed with somewhat less strictness. The timing calculation method is the same everywhere.
Can Rahu Kaal be good for anything?
Yes - Rahu Kaal is an ideal time for Rahu-related spiritual practices. Chanting Rahu mantras, performing Rahu-specific remedies, donating Rahu-associated items (black sesame, iron, blue cloth), and meditating with the intention of transcending material attachments can all be powerfully effective during this period. Some tantric and occult practices also use Rahu Kaal intentionally.
What is the difference between Rahu Kaal and Gulika Kaal?
Both are inauspicious daytime periods calculated using the same 8-segment formula. Rahu Kaal is governed by Rahu (north lunar node) and is generally the more widely observed of the two. Gulika Kaal is governed by Gulika (also known as Mandi), the son of Saturn, and carries Saturn's energy - heaviness, delay, and restriction. Gulika Kaal is considered by many astrologers to be equally or even more malefic than Rahu Kaal, though it varies by tradition. Both should be avoided for auspicious beginnings.