Hi Ernst,
Have you read this book of Sri Yukteswar biography by Paramahamsa Prajnanananda.
It could have more information on any astrology references by Sri Yukteswar regarding correct calculations. I am not sure though, just got it from a devotee friend.
https://www.amazon.com/Shriyukteshwar-Incarnation-Wisdom-Paramahamsa-Prajnanananda/dp/3901665234
Thank you
I have not read that one. There is another free one at http://www.yoganiketan.net/historical-books/biographies/
would be interesting to find reviews on this one, its very expensive!
Ernst
Yes, its quite expensive on amazon but its for $12 only directly on their website.
https://www.kriya.org/store/books/en
Name of Book : Swami Shriyukteshwar: Incarnation of Wisdom (2nd Ed.)
The author Paramahamsa Prajnanananda is still alive and can have lot of info about Sri Yukteswar. He can be contacted directly through his website.
As you were searching for Sri Yukteswar book which is not found, so thought to give you this link if that helps in any way.
You can get that same book cheaper at https://www.kriya.org/store/paramahamsa-prajnanananda-store/en