For boys, they have a Upanayana ceremony (at which, depending upon the particular denomination; eg: some have it at age 7, while others at age 13), where they get their first red thread on their wrists.
Hindu girls have a Ritushuddi ceremony, which celebrates her first menstruation.
Boys-14 and Girls-12
sikhism, hinduism, islam, buddism, juadiasm
The Quinceanera or Quincearero, for children when they turn 16 years old.
Initiation ceremonies is essential just because it will expose the the person being initiated to be aware of the principles involved in the tradition of such organization or culture. It will serve as an oath of office when you talk about culture.
There is no such thing as hindu age. But in gupta dynasty Hinduism was compulsory.
Most cultures dont have one. Other have various coming of age ceremonies - the Bar Mitzva, the confirmation, Baptism, whatever...
In Japanese culture, coming of age occurs at the age of 20 years old. Their Seijin Shiki ceremonies are held on the second Monday of January each year.
They were considered an adult when they were old enough to hunt and fight for the tribe
Two religious ceremonies for boys during the time of Jesus were circumcision, which was a sign of the covenant between God and the Jewish people, and the Bar Mitzvah, which marked the coming of age (around age 13) and initiation into religious responsibilities as an adult in the Jewish community.
This all depends on the Hindu that you are talking about. More information is needed.
Hindu calender starts from 3102BC since then 5111 years passed by. Hindu myth says after 5000 years the present kaliyuga(era) will end and a golden age will start. if this is true the golden age has already started based on lunar Hindu calender years. there is nothing special about the year 2012.
According to the Hindu Marriage Act of 1995, a Hindu woman should be at least 18 years of age to be able to get married. A Hindu man, on the other hand, should at least be 21 years of age.