Ratrimaan in Astrology or Jyotish
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Ratrimaan in Indian Vedic Astrology
Ratrimaan (रात्रिमान) in Indian Vedic Astrology refers to the duration of nighttime — specifically the time between sunset and the next day's sunrise. It is a critical concept used in astrological calculations, especially in the division of planetary hours (Horas), determining auspicious timings (Muhurta), and understanding planetary influences during the night.
What is Ratrimaan?
The word "Ratrimaan" is derived from Sanskrit where “Ratri” means night and “Maan” means measurement or duration. It signifies the total time span of the night period, which complements the day period known as Dinmaan.
Since sunrise and sunset times vary based on location and season, the length of Ratrimaan also changes accordingly. It is longer in winters and shorter in summers in most locations.
How is Ratrimaan Calculated?
The formula for calculating Ratrimaan is:
Ratrimaan = Next Day's Sunrise – Current Day's Sunset
For example, if sunset occurs at 6:45 PM and the next day's sunrise is at 5:45 AM, then:
Ratrimaan = 5:45 AM – 6:45 PM = 11 hours
Use of Ratrimaan in Astrology
- Division into Horas: Like Dinmaan, Ratrimaan is also divided into 12 planetary hours or Horas, each ruled by a specific planet and influencing energy during that period.
- Muhurta Selection: For night-time events like marriage, travel, or rituals, astrologers consider favorable Horas within Ratrimaan.
- Planetary Strength: Some planets are considered stronger during night (e.g., Moon, Venus), and their placement within Ratrimaan Horas can influence results.
- Daily Panchang: Ratrimaan plays a role in daily Panchangam calculations, especially in defining the boundaries of Tithi and Nakshatra.
Dinmaan vs Ratrimaan
While Dinmaan refers to the duration between sunrise and sunset, Ratrimaan covers the period between sunset and the next sunrise. Together, they complete a 24-hour Vedic day and are used to assign planetary influences hour by hour.
Astrological Relevance
- Helps identify strong and weak planetary hours at night
- Important for analyzing night-born horoscopes
- Assists in selecting night Muhurtas for rituals like Satyanarayan Katha or certain Pujas
- Supports deeper understanding of transit timing and dashas
Conclusion
Ratrimaan is an essential concept in Vedic astrology that ensures the accurate division of time and planetary influence during the night. Alongside Dinmaan, it helps astrologers fine-tune predictions and determine the most favorable periods for performing important activities and spiritual rituals.