The calculation of birth parkha is not too complicated like other
calculation. But you must be sure of your mother’s age. Take
your mother’s age and substract your age, then add an extra one year and
divided by “8”. Use the numerical final result or remaining number
and start always from Parkha Kham (5th parkha). Count anti clock
wise up to the number that was your final numeral result or your birth
Mewa.

For instances, if your mother is 51 years old and your age is 24.

51

-24

____

27

+ 1

___

28

:-8

____

4

___

Put always 1 on Kham, 2 khen, 3-Da, 4-Khon, 5-Li etc., If you do rapid
calculation then put always 1 on Kham, 10-khen, 20-khon, 30-Zon, 40-Gin,
khen-50 etc. So use the same knowledge and do the rest.

Changeable parkha is a parkha or trigrams which will change every year.

CALCULATION: To find out your changeable parkha, you should note
that the male and female will be differentiate by the animal sing of the
concerned person. The calculation are classified into two types:

1) Male and female.

Male signs-Mouse, Tiger, Dragon, Horse, Monkey and Dog

Female signs: Ox, Hare, Snake, Sheep, Bird and Pig

For example, a woman can have the sign for the year of the Tiger but
this is a male animal sign.

1) If the concerned person is Male then start from Parkha “LI”
and go clockwise or downward way upto your age. Use the same rapid
calculation to save your time.

According to Elemental Astrology text (‘byung rtis man ngag zla baai
vod zer)

“Chu kha ma long re re rtsi”

Chu ka long na zur kah chong”

While finding your parkha, at every ten count one can calculate by jumping right to the corners and at other digits are needs to count by going from each block.

Male:

Let’s say if your aage is 70 years old and male. Putt one at
Parkha LI (starting point) and then put the corner always, 10-khon, 20-Khen,
30-Gin, 40-Zon, 50-Khon, 60-Khen and 70-Gin etc.

If someone is 28 years old. Do the same method as above upto the
20 and go one by one.

For example-Put 1-li, 10-Khon, 20-Khen, 21-Kham, 22-Gin, 23-Zin, 24-Zon,
25-Li, 26-Khon, 27-Da, 28-Khen etc.

Female:

If the concerned person is Female. Then start from Kham and go
anticlock wise or upward way upto your age. This method is same as
the calculation of birth parkha.

If someone is 18 years old, do the same method a before upto your age
and then go on adding one by one parkha until your age by clockwise.
So you can not jump to the cardinal side.

Kham-1, Khen-10, Khon-12, Li-13, Zon-14, Zin-15,
Gin-16, Kham-17, Khen-18.

If someone is 80 years old. Put always 1 on Kham, 10-Khen, 20-Khon,
30-Zon, 40-Gin, 50-Khen, 60-Khon, 70-Zon and 80-Gin etc.