The time-wheel is a symbol of ascending and descending order of this universe. When the wheel of the time goes in the descending direction, its geographical condition, human civilization and culture degenerate and when the wheel of the time goes in the ascending directions, its geographical condition, human civilization and culture evolves.
The movement of time in descending direction is called 'Avasarpinī' and the movement of time in ascending direction is called 'Utsarpinī'.
During 'Utsarpinī' there are evolution, during 'Avasarpinī' there is degeneration. The processes of evolution and degeneration affect collectively, not individually.
The extreme point of 'Avasarpinī' is the starting point of 'Utsarpinī' and the end of the 'Utsarpinī' leads to the birth of 'Avasarpinī'.
Each ' Utsarpinī' and 'Avasarpinī' has six divisions called 'Ārā'.
The six Ārās of 'Avasarpinī' are:
1 Susama - Susama
Exequetely splendid
2 Susama
Splendid
3 Susama - Dusama
More splendid, slightly troublesome
4 Dusama - Susama
More troublesome, slightly splendid
5 Dusama
Troublesome
6 Dusama - Dusama
Extremely troublesome
The six Ārās of 'Utsarpinī' are:
1 Dusama - Susama
More troublesome, slightly splendid
2 Dusama
Troublesome
3 Dusama - Dusama
Extremely troublesome
4 Susama - Dusama
More splendid, slightly troublesome
5 Susama
Splendid
6 Susama - Susama
Exquisitely splendid