Mangalam Jyotishalay
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Astrology fact of the day

A new fact every day.

Jyotish uses the sidereal zodiac, which differs from the tropical zodiac by the ayanamsa, currently about 24 degrees.

All facts

  1. Jyotish uses the sidereal zodiac, which differs from the tropical zodiac by the ayanamsa, currently about 24 degrees.
  2. There are 27 nakshatras, and each spans 13 degrees 20 minutes of the zodiac.
  3. Each nakshatra is divided into 4 padas (charanas) of 3 degrees 20 minutes each.
  4. The Vimshottari Dasha system covers 120 years and is based on the Moon's nakshatra at birth.
  5. Jyotish counts nine grahas: Sun, Moon, Mars, Mercury, Jupiter, Venus, Saturn, Rahu and Ketu. Rahu and Ketu are lunar nodes, not physical bodies.
  6. The Lagna is the zodiac sign rising on the eastern horizon at the time of birth, and it changes roughly every two hours.
  7. Panchanga means five limbs: tithi, vara, nakshatra, yoga and karana.
  8. A tithi is the time the Moon takes to gain 12 degrees on the Sun, so a lunar month has 30 tithis.
  9. The days of the week are named after the grahas, for example Ravivara for the Sun and Somavara for the Moon.
  10. Saturn takes about 29.5 years to go around the zodiac and Jupiter about 12 years.
  11. Sade Sati is the period, about seven and a half years, when Saturn transits the 12th, 1st and 2nd signs from the natal Moon.
  12. Rahu and Ketu are always exactly 180 degrees apart, and their mean motion is retrograde.
  13. The Navamsha (D-9) chart divides each sign into nine parts of 3 degrees 20 minutes each.
  14. A Kundali has 12 houses (bhavas), each connected with areas of life such as self, family, work and relationships.
  15. In the Hindu Panchanga, the day begins at sunrise and not at midnight.
  16. A planet very close to the Sun is called combust (asta), and traditionally its results are considered weakened.
  17. The Sun and the Moon never go retrograde. Only Mars, Mercury, Jupiter, Venus and Saturn do.
  18. Traditional exaltation signs: Sun in Aries, Moon in Taurus, Mars in Capricorn, Mercury in Virgo, Jupiter in Cancer, Venus in Pisces, Saturn in Libra.
  19. A planet is called vargottama when it occupies the same sign in both the birth chart (D-1) and the Navamsha (D-9).
  20. Muhurat selection looks at the panchanga elements and the rising sign at the chosen time.
  21. Amavasya is the 30th tithi (new moon) and Purnima the 15th tithi (full moon).
  22. Ashtakoota Guna Milan compares eight factors between two charts, with a total of 36 points.
  23. Jyotish is one of the six Vedangas, the limbs of the Vedas, and is traditionally called the eye of the Veda.
  24. Vedanga Jyotisha, traditionally attributed to Lagadha, is among the oldest surviving Indian texts on astronomical timekeeping.
  25. The Vimshottari Mahadasha order is Ketu 7, Venus 20, Sun 6, Moon 10, Mars 7, Rahu 18, Jupiter 16, Saturn 19 and Mercury 17 years.
  26. In the Parashari system every planet aspects the 7th house from itself, and Mars, Jupiter and Saturn also have special aspects.
  27. Traditionally Jyotish has three branches: Siddhanta (astronomy), Samhita and Hora (predictive astrology).
  28. Panchanga calculations depend on the Moon and Sun positions, which is why the exact birth time and place matter.
  29. The Moon changes sign roughly every two and a quarter days.
  30. Astrology offers guidance for reflection and decision-making, and a chart is best understood with its whole context, not a single planet.
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