Rahu Kaal
Rahu Kala or Rahu Kalam is one of the 8 segments of the day and considered inauspicious period in Indian Astrology, widely practiced in South India, due to its associated with malefic, Rahu. The segments are calculated by taking the total time between sunrise and sunset, at a given place, and then dividing this time duration by 8.

The Graha (loosely translated as planets) according to Indian astronomers were the Sun, Moon, Mars, Mercury, Jupiter, Venus, Saturn, Rahu and Ketu. Even though Rahu and Ketu are not physical bodies, they are sensitive points on the intersection of the ecliptic (the apparent path of motion of the Sun) by the Moon's orbit. Rahu is the northern point and Ketu is the southern point. Ancient astronomers felt that the mighty Rahu and Kethu have the strength to eat the sun, thus causing a solar eclipse. Hence it is considered inauspicious to begin any undertaking during this "Rahu kalam". Every day this Rahu kalam lasts for around 90 minutes, but the duration differs according to the length of the time between sun rise to sunset.

To calculate Rahu kalam, the time between the sunrise and sunset is divided into 8 units or time-groups, which time-group will have the Rahu kalam depends on the weekday.

For each weekday, Rahu kalam falls as under:

Sunday - 8th Muhurtha (Unit)
Monday - 2nd Muhurtha
Tuesday - 7th Muhurtha
Wednesday - 5th Muhurtha
Thursday - 6th Muhurtha
Friday - 4th Muhurtha
Saturday - 3rd Muhurtha

How to remember Rahu Kal

Although the time Rahu kalam falls on each day, and its span varies and needs to be calculated as per the sunrise and sunset time. You may use the times below if you do not have access to accurate Rahu kal. These times are accurate only if the day lasts for 12 hours, and the sunrise is at 6.00 AM. You can adjust an approximation according to the sunrise and day length in your area.

Days and corresponding timings are as follows:

Monday : 7:30 - 9:00
Tuesday : 15:00 - 16:30
Wednesday : 12:00 - 13:30
Thursday : 13:30 - 15:00
Friday : 10:30 - 12:00
Saturday : 9:00 - 10:30
Sunday : 16:30 - 18:00

All you need to remember is the phrase ?[Mother Saw Father Wearing The Turban Slowly]"

Mother = Monday : 7:30 - 9:00
Saw = Saturday : 9:00 - 10:30
Father = Friday : 10:30 - 12:00
Wearing = Wednesday : 12:00 - 13:30
The = Thursday : 13:30 - 15:00
Turban = Tuesday : 15:00 - 16:30
Slowly = Sunday : 16:30 - 18:00
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