Astrological Technique: progressed Chart of a year (pCoaY)

This is my favourite chart,
when conditions have a profound impact on people's lifes and on their health,
like chronic diseases,traumata,severe infections,tumors or metabolic diseases.

I found this technique by trial and error.





CALCULATION

Sun(pCoaY) = Sun(R)+a.360/365,24219878


Sun(pCoaY).....Position of the Sun in the progressed Chart of a year
Sun(R).........Position of Sun radix
a..............age of a person in years
365,24219052 ..Tropical Year
https://en.wikipedia.org/wiki/Tropical_year



It counts from birthday to next birthday.
calculated for the birthplace 
(here more research needs to be done:
Can I defend myself from a difficult pCoaY
by moving to a different continent?
-I don't think so.)


0ARI00'00''=0=360


EXAMPLE

We calculate case10 person 06
as an example.
https://astrohomeopathy.blogspot.com/2020/04/case-10-person06-post-traumatic-stress.html

our wanted Sun(pCoaY) is between
20.11.2000 and 20.11.2001,
which is the period of time
when the trauma had happened.

Sun(R)= 27SCO21'11''=237,3530556
age: person06 was 22 years old

 Sun(pCoaY)=237,3530556+22*360/365,2421905
=259,0372975
=259DEG 02'14''

Sun(pCoaY)= 19SAG 02' 14''
= 10.12.2000 20:01:20 CET

Bring it to synastry with the natal chart.