The other day when we were reading an old collection of Thi. Janakiraman, my wife pointed out that he has referred to all the people over 60 as கிழம். That was the view in the 1940s when the stories were written. I think the life expectancy at that time was 32. It is about 67 now. So keeping the same difference of 28 years, one becomes a கிழம் at the age of 95. :dance::bounce:
Today only people above 80 are called old.