Njattu Velas are Solar Transits through the Sidereal Zodiac, the Sapta Vimsatmaka Jagath. A constellation is 13 deg 20 minutes in length and the Sun takes almost 14 days to transit a constellation. Aswathy Njattuvela meanst the Solar Transit of Aswathy and Thiruvathira Njattuvela means the Solar Transit of Betelgeuse or Aridra or Thiruvathira. Astro Meterology has been found, by observation, far more accurate than modern Meteorology, when it comes to predicting the weather. In Kerala, both Kala Varsha ( Solar Transit from the 15th degree of Taurus ) and Thula Varsha ( Solar Transit from the First Degree of Libra ), comes dot on time.
Lunations are 12 degrees in length. Lm - Ls = D, that is the longitude of the Moon - long Sun = Thidhi. Most of the Hindu festivals are based on Lunations, Vinayaka Chathurthi, Maha Navami, Vijaya Dasami et al.
The Lunar Months, the Chaitradi Chandra Masas are reckoned from the Equinoctial New Moon.
The Full Moon is called Poornima and New Moon, Amavasya.
The Twelve Solar Months, Meshadi Dwadasa Masas, are caused by Sun's transit of the Zodiac of Signs, the Dwadasa Rasyatmaka Jagath.
The Sexagesimal ( 1/60 th ) Division of Day & The Computation of Time ( Kala Nirnayah )
One Asu is 4 seconds and 6 such Asus constitute a Vinadi ( 24 seconds ). One Nadi is 60 Vinadis. ( 24 minutes) . 60 such Nadis constitute a day of 24 Horas ( hours ), Chatur Vimshati Smrithah. Or 15 degrees = 1 Hour. Ardha Rasi Bhaveth Hora.
Fifteen such Days constitute a Fortnight, Pancha Dasa Ahani Pakshah. There are two Fortnights, Bright Fortnight, Shukla Paksha and Dark Fortnight, Krishna Paksha ( Tad Shuklam Krishnas cha ). Thirty days make a month. Two such months constitute an Indian Season, Rithu. Tau Dau Rithu.
Six such months constitute a Solstice, Shan Masa Ayanam Bhavathi. Only on two days do Night Duration equal Day Duration and they are Vishu and Thula Vishu. ( Yadha Mesha Tulayo Varthathe / Thada Ahoratranam Samanani Bhavanthi).
There are two Solstices, Winter and Summer. Tad Uttaram Dakshinam cha. The Southern Solstice, that is the southerly journey of the Sun is Dakshinayana( Karkyadi gathe shad ke Dakshinayanam uchyathe ) , as his Northerly journey or Northern Solstice is Uttarayana. ( Makara gathe shad ke Uttarayanam Uchyathe ). Twelve such solar months constitute a Solar Year, Samvatsara ( Dwadasa Masa Vatsara Smritha). 43,20000 such years constitute an Equinoctial Cycle, Chatur Yuga and 1000 such Equinoctial Cycles or 4.32 billion years constitute a Cosmological Cycle, Brahma Kalpa ( Chatur Yuga Sahasram Indraharina dinam uchyathe) . A Super Cosmological Cycle, Brahma Span, Maha Manvantara, is 100 years or 311.04 trillion years ! ( Source of Sanskrit definitions - The Maha Bhagavata ).
Sahasra Yuga Paryantham
Aharyal Brahamano Vidu
Ratrim Yugah Sahasrantham
The Ahortra vido Janah
Here are some important dates.
|Vaishakha Lunar Month||16042018|
|Karkitaka New Moon||11082018|
|Sree Krishna Jayanti||02092018|
|Sree Narayana Guru Jayanti||27082018|
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