Rahu Kaal Calculator
What is Rahu Kaal?
According to Vedic astrology, Hindu scriptures, Rahu is an inauspicious celestial entity that exerts malefic effects. Rahu Kaal time lasts for about 1.5 hours each day when Rahu’s influence is the highest. Rahu Kaal varies daily depending on the sunrise and sunset times, making location-specific calculations necessary.
One should avoid doing any kind of auspicious and new work during the time of Rahu’s influence. Traditionally, any activities like Puja, Havan, marriage, purchase of property or starting a business have been avoided during Rahu Kaal time. Rahu creates obstacles in getting your desired results. However, the ongoing work can be continued and Puja-Havan etc. can also be done to please Rahu and related to Rahu.
Use Case of the Rahu Kaal Calculator
Rahu Kaal is considered one of the most inauspicious time periods of the day as per Vedic astrology. It is widely believed that no important work—be it travel, business, or religious ceremonies—should be initiated during this time.
The Rahu Kaal Calculator helps users determine the exact timing of Rahu Kaal based on their location and selected date, allowing them to avoid bad timings and schedule activities more auspiciously.
This tool is especially helpful for:
Planning marriages, pujas, or spiritual rituals.
Business launches or property registration.
Travel planning, especially for religious or important trips.
Astrology practitioners and believers who follow Panchang.
User Guide – How to Use the Rahu Kaal Calculator
Enter your location in the input box (e.g., Delhi, India).
Choose the date you want to check Rahu Kaal for.
Click the “Calculate Rahu Kaal” button.
The tool will instantly show:
Your exact location
Selected date
Sunrise and Sunset time
The Rahu Kaal time slot for that date
Duration of Rahu Kaal
No downloads, no sign-up, and no complex calculations – just quick and accurate results!
Calculation Method – How Rahu Kaal is Calculated
Rahu Kaal varies every day based on sunrise and sunset time and follows a specific pattern for each weekday. The daytime (from sunrise to sunset) is divided into 8 equal segments, and each day has a pre-defined Rahu Kaal segment.
Rahu Kaal Segment Mapping by Day:
| Day | Rahu Kaal Segment (1 to 8) |
|---|---|
| Sunday | 8th segment |
| Monday | 2nd segment |
| Tuesday | 7th segment |
| Wednesday | 5th segment |
| Thursday | 6th segment |
| Friday | 4th segment |
| Saturday | 3rd segment |
Formula Used:
Rahu Kaal Start = Sunrise Time + (Segment Duration × Rahu Segment Index)
Rahu Kaal End = Rahu Kaal Start + Segment Duration
Where:
Segment Duration = (Sunset – Sunrise) ÷ 8
Rahu Segment Index is based on the weekday
Example Calculation
Let’s assume you select Delhi, India and the date is May 1, 2025.
Suppose the Sunrise is at 05:38 AM and Sunset is at 06:47 PM.
Total daytime = 13 hours 9 minutes = 789 minutes
Each segment = 789 ÷ 8 = 98.625 ≈ 98 minutes
Now, let’s say the date falls on Thursday, and Thursday’s Rahu Kaal is during the 6th segment.
Rahu Kaal Start = 05:38 AM + (98 × 6) = 03:26 PM
Rahu Kaal End = 03:26 PM + 98 mins = 05:04 PM
So, on May 1, 2025, in Delhi, Rahu Kaal will be from 3:26 PM to 5:04 PM.
Features of the Rahu Kaal Calculator
Location-based precise calculation using latitude and longitude.
Supports any date selection for Rahu Kaal prediction.
Uses real-time sunrise and sunset data.
User-friendly and instant results.
Based on authentic Vedic Panchang calculation rules.
Why Avoid Rahu Kaal?
According to Vedic belief, Rahu Kaal is governed by the shadow planet Rahu, which is associated with misfortune, confusion, and failure. Starting anything auspicious during this time can lead to delays, obstacles, or negative results. Therefore, this calculator serves as a helpful tool to ensure success by avoiding that period.