J.B. Morinus is a 17th-century astrologer and professor of mathematics at Paris Royal University.

I have prepared an article with illustrative example on how to read a natal chart in Morinus's style:

https://morinus-astrology.com/how-to-read-natal-chart/

Hi Mark - this is very helpful. Thanks so much for preparing this summary and sharing it on the forum. Ed

Hi,

very interesting article, I started to study Morinus many years ago but I did abandoned it after a while due to the lack of modern literature on the subject, so I read your article with keen interest but there is something that bothers me and precisely the fact that I cannot replicate the birth chart of your example that shows a difference of 13 minutes in the calculation of the GMT from the Local Time, I have checked it out with Astrodatabank and it gives me the same difference.
Did you use a different location for the birth place?
Sorry to bother you, I have probably missed something.

regards
Saturnello

Saturnello wrote: Thu Jun 20, 2024 12:37 pm shows a difference of 13 minutes in calculating the GMT from the Local Time,.

Yes, you are right. Since this is a Local Mean Time (LMT), the offset should be 24/360*longitude, which is 00:40 from GMT.

However, I relied on the IANA* timezones database, which showed GMT +00:53 offset for Ulm (Germany) 1979. This database includes different administrative changes in time due to local regulations, of which we are often unaware.

I do not know exactly what the reason for shifting the time in Ulm in 1979 for 13 minutes, but I believe the 00:53 offset to be correct. At least the directions constructed at that time look pretty accurate.

_____
*IANA - Internet Assigned Number Authority

This is what ChatGPT told me:

**Historical Adjustments**: In Ulm, the GMT offset was around 0:53 at the time of Einstein's birth due to the peculiarities of regional time standards applied in Germany before introducing the unified CET. These 13 minutes of difference could have arisen from administrative or transportation considerations, which were typical for many regions at that time.

Thus, the 13-minute difference between the calculated local mean time and the time indicated in the IANA database can be explained by historical peculiarities and regional time standards that might have differed from the theoretical LMT.

Thanks a lot! I was not aware of such detailed information on time changes in the IANA database, I just wonder if anybody has ever informed Astro-Databank about the correction to make on Albert Einstein birth chart.
I'm sure his page gets visitors by the thousands every month...

regards
Saturnello

* Added to reading list
Thanks Alexey