Science of Vishu

The earth revolves around the sun. the  number of revolution  is counted   starting  from the fixed point known as Mesha sankranthi rekha   which is Alpha Aeries point. The movement  of the sun ( when viewed from the earth) from the sign of Meena to the sign mesha is the sankranthi.  It infact  from the mesha sanskrathi starts  the   astronomical new  year day. i.e.  the  starting of  counting  the revolution of the  earth around the sun.  

 In Sanskrit it is known as mesha vishuvath  from the word vishuvath came vishu. There are mesha and tula vishuvath. The  time of  the change of the sign from meena to mesha (mesha sankranthi) is known as the punya kaalam. By assigning  the  Sankranti time as the right ascension (lagna) point   examining the position of all other  grahas the  vishu phala pravachana is done  for the next one year.

As usual, Indians connected the  science with  spirituality. So that vishukkaineettam, Vishukkani etc  are organized including temple visit..

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