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Ratrimaan in Astrology or Jyotish

Ratrimaan in Astrology or Jyotish



Know about Ratrimaan in Indian Vedic Astrology or Jyotish: -

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.


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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

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

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.


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Last Updated:
17 December 2025 (Wednesday), 17:00 Hours IST