Rahu is one of the planets or Navgrahas in Hindu religion.
Rahu Kala is considered as the most inauspicious period in a day. It is avoided
for all activities. As per Hindu astrology, eight planets control the twelve
hours of a day that is from sunrise to sunset. Rahu is one of them. The 90
minutes controlled by Rahu is known as Rahu Kalam.
Rahu and Ketu are the two points on the Moon’s orbit as per
Hindu astrology. Moon’s northern node is called Rahu. The navgraha is also
known as the Dragon’s head.
There are two methods by which Rahu Kalam is followed one is
the fixed period. Other is based on sunrise, depending on sunrise the Rahu
Kalam period may be short or long.
The following is the fixed Rahu Kala period:
Sunday – 4:30 PM to 6:00 PM
Monday – 7:30 PM to 9:00 PM
Tuesday – 3:00 PM to 4:30 PM
Wednesday – 12:00 PM to 1:30 PM
Thursday – 1:30 PM to 3:00 PM
Friday – 10:30 PM to 12:00 PM
Saturday 9:00 PM to 10:30 PM
The second half of Rahukala is considered to less
inauspicious than the first half.