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As far as i know the number 60 represents five Jovian periods i.e. it takes Jupiter about 12 years to orbit the sun.

Hai Gayathri,

http://en.wikipedia.org/wiki/Tamil_calendar

u can check out this website for tamil years' names.

I think this will be helpful!

Hi Anu & Radhika  , Thanks a lot for ur reply.... and will surely check the link and update u all the answers , if i could find any...

This is the answer sent to me by Priya shyam :

This is something I found in the net - The 60-year cycle is also very ancient and is observed by most traditional calendars of India and China, and is related to 5 revolutions of Jupiter according to popular belief, or to 60-year orbit of Nakshatras (stars) as mentioned in Surya Siddhanta.

Why Jupiter? It could also be because it is the largest planet in the solar system. Will let you know if I come across anything more significant.

Information collected from :

http://www.mayyam.com/hub/viewtopic.php?t=1767
 

The Earth travels in an eliptical path around the Sun through 360 degrees (Paakai in Tamil),
and the time period for one such complete travel around the Sun (Suriyan in Tamil) is called an Year (Aandu in Tamil).

The circumferance of the eliptical path traced by the Earth (Ulaham in Tamil) having the Sun as the central point -
are divided into twelve arcs, and the angular segments traced by each arc measuring 30 degress is
called a House (Veedu in Tamil or Rasi in Sanskrit). Thus the earth passes through twelve Houses in an year.

In actual fact, it is the Earth which enters each Houses at any given time. But for us who live on the
Earth it appears as if the Sun is moving (relative Motion), and we very loosely say that the "Sun travels through the twelve Houses".

The names of twelve rasi's (houses)

1.Mesha
2 Vrishaba
3 Mithuna
4 Karkata
5 Simha
6 Kanya
7 Tula
8 Vrischika
9 Dhanus
10 Makara
11 Kumbha
12 Meena 

The time the Sun enters the "Mesha Veedu" or Rasi was traditionally taken as the starting point of the New Year by the Tamils.

The date of entry of Sun into Mesha(aries) house... which is its location of EXALTED STATUS (Uccha)... falls on or about April-14 every year...

..which has been taken as the first day of the year as well as the Month Chiththirai...

There is a saying that, if in horoscope, Sun is in a good position, even if other planets are not in good position,
it will be balanced by the Sun's power...So if new year is officially observed on this the Day when Sun is in his Exaltation, it willbe good for the Nation...

Both the Planets Guru(Jupiter) and Soorya(Sun) are the most important planets to render Success in ones Life.

So the influence of both these Good planets will be available to us in our Inaugural activities towards the future.

And still No one knows that , from when a year is given the tamil name .

And the link provided by Radhika , gives us the list of names of tamil years.

and u get more information related to this topic...please do go through that link...

Thanks to  Priya shyam ,anu , Radhika.

Thanks priya shyam, radhika and anu...

Thanks Gayathri anand for consolidating and coordinating in collecting all information for my sake

Gayathri,

thanks for the detailed information.