What is Rahu Kalam?
Rahu Kalam (also written Rahu Kaal or Rahu Kaalam) is a daily period of approximately 90 minutes considered inauspicious in Vedic astrology. It is ruled by Rahu, one of the nine celestial bodies (navagraha) — specifically a shadow planet representing the ascending lunar node.
During Rahu Kalam, starting new activities is traditionally avoided. It is one of the most widely observed timing considerations in daily Hindu practice, especially in South India.
How Rahu Kalam is Calculated
The calculation is straightforward:
- Divide the time between sunrise and sunset into 8 equal parts
- Each part is assigned to a planet in a fixed order
- Rahu's assigned slot for each weekday follows this pattern:
| Day | Rahu Kalam Slot | Approximate Time* | |-----|----------------|-------------------| | Monday | 2nd slot | 7:30 – 9:00 AM | | Tuesday | 7th slot | 3:00 – 4:30 PM | | Wednesday | 5th slot | 12:00 – 1:30 PM | | Thursday | 6th slot | 1:30 – 3:00 PM | | Friday | 4th slot | 10:30 – 12:00 PM | | Saturday | 3rd slot | 9:00 – 10:30 AM | | Sunday | 8th slot | 4:30 – 6:00 PM |
Times are approximate for a 6:00 AM sunrise / 6:00 PM sunset. Actual times vary by location and season.
A common mnemonic to remember the weekday order: Mother Saw Father Wearing The Turban Suddenly (Monday, Saturday, Friday, Wednesday, Thursday, Tuesday, Sunday — in order of the slot number 2, 3, 4, 5, 6, 7, 8).
What to Avoid During Rahu Kalam
Traditionally, these activities should not be started during Rahu Kalam:
- Beginning a new job or business venture
- Signing contracts or agreements
- Starting a journey
- Purchasing property or vehicles
- Performing religious ceremonies (except Rahu-specific pujas)
- Making important financial decisions
What You Can Do During Rahu Kalam
Rahu Kalam only affects the start of new activities. You can:
- Continue work already in progress
- Attend meetings already scheduled
- Perform routine daily tasks
- Travel if the journey began before Rahu Kalam
- Eat, rest, and handle regular responsibilities
Some practitioners specifically use Rahu Kalam for prayers to Rahu, such as visiting Navagraha temples or performing Rahu-specific remedies.
Why Rahu is Considered Inauspicious
In Vedic mythology, Rahu is the head of a demon who was beheaded by Vishnu's Sudarshana Chakra while trying to drink the nectar of immortality. The head became Rahu and the body became Ketu — both became shadow planets that cause eclipses.
Rahu represents illusion, confusion, and unexpected disruption. During Rahu's period, new beginnings are thought to be susceptible to hidden obstacles, miscommunication, and unforeseen complications.
Rahu Kalam vs. Other Inauspicious Periods
Rahu Kalam is one of three commonly observed inauspicious periods:
- Rahu Kalam — Ruled by Rahu, most widely avoided
- Yamaghanta — Ruled by Yama (god of death), especially avoided for travel
- Gulika Kalam — Ruled by Gulika (Saturn's son), considered mildly inauspicious
Of these three, Rahu Kalam receives the most attention in daily practice.
Rahu Kalam in KAAL
KAAL calculates Rahu Kalam precisely for your location using actual sunrise and sunset times — not the generic tables found in most calendars. The Daily screen highlights Rahu Kalam prominently so you can plan around it.
Track Rahu Kalam and all daily inauspicious periods with KAAL — the modern Hindu calendar app with precise timings based on your location's actual sunrise and sunset.
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