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HOROI Project @horoiproject.bsky.social · 05/10/2026

October brings new translations, CSA lessons, a Q&A session, and potentially more.

HOROI Project @horoiproject.bsky.social · 05/10/2026

The September HOROI digest is out with Theophilus and lessons on eclipse prediction and meteorological omens. I also ran a six-hour horary workshop that gave me the opportunity to rethink my practical method from principles to application.

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Monthly Digest, September 2026 | HOROI Project

Dear Friends, It is already October, so before the month gets away from me, I’d like to look back at the HOROI Project activities in Septemb

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HOROI Project @horoiproject.bsky.social · 30/09/2026

Back on track. Theophilus comes tomorrow.

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HOROI Project @horoiproject.bsky.social · 14/09/2026

A Demotic papyrus in Vienna reads eclipses by month, hour, color, and direction, names its months in Babylonian, and starts the list at the beginning of the Babylonian year—in a country with a calendar of its own.

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Celestial Science for Astrologers – L1:17: Portent and Period | HOROI Project

Lesson 17. Unit Summary: Portent and Period The limit of the scale Unit 3 closed by calibrating the cost of a small deviation: a hollow mont

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HOROI Project @horoiproject.bsky.social · 08/09/2026

A new lesson in Celestial Science for Astrologers: how centuries of Babylonian record-keeping produced eclipse prediction, and what that did to the divinatory tradition it grew out of — which was not to end it. 2/3

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Celestial Science for Astrologers – L1:16: The Eclipse Predicted | HOROI Project

Lesson 16. The Eclipse Predicted A program of centuries The preceding lesson examined what happened once an eclipse arrived: how the trained

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HOROI Project @horoiproject.bsky.social · 02/06/2026

I’ve posted the May digest. Alongside ongoing translation work, it highlights the launch of the new CSA course and previews HOROI Talk #21, a historical overview of astrology’s place among the celestial sciences and its forms, branches, and traditions. www.patreon.com/posts/monthl...

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Monthly Digest, May 2026 | HOROI Project

Monthly Digest, May 2026 by HOROI Project on Patreon. Join HOROI Project's community for exclusive content and updates.

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HOROI Project @horoiproject.bsky.social · 26/05/2026

L1:01 of Celestial Science for Astrologers is live. The Sun, its daily arc, the cardinal directions it defines, the Babylonian day—Šamaš, the all-seeing judge of Mesopotamian thought. www.patreon.com/posts/celest...

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Celestial Science for Astrologers – L1:01: The Sun, the Day, and the Night | HOROI Project

Celestial Science for Astrologers – L1:01: The Sun, the Day, and the Night by HOROI Project on Patreon. Join HOROI Project's community for exclusive content and updates.

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HOROI Project @horoiproject.bsky.social · 19/05/2026

I just launched Celestial Science for Astrologers, a structured course on the astronomical and historical background of astrology, published on the HOROI Project Patreon. These questions have answers—and finding them takes both astronomy and history. 3/4

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HOROI Project @horoiproject.bsky.social · 19/05/2026

Why are there different house systems, and what are their logics? And what is the long-term challenge that every sidereal zodiac must eventually confront? 2/4

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HOROI Project @horoiproject.bsky.social · 19/05/2026

Why does the shadow of the Earth move across the Moon in a different direction during different lunar eclipses, and why did that matter to Babylonian astrology? What is the astronomical background behind the exaltation signs and degrees? 1/4

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HOROI Project @horoiproject.bsky.social · 12/05/2026

FYI: Volker Schendel’s two-part interview with me.

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HOROI Project @horoiproject.bsky.social · 14/04/2026

A new Q&A session is now open. I look forward to answering your questions concerning classical astrologies, whether historical, theoretical, or practical, including actual horoscopic examples. www.patreon.com/posts/q-apri...

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Q&A, April 2026 | HOROI Project

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Marco Perale @mperale.bsky.social · 31/03/2026

Conference on the origins of the Zodiac in Berlin Marius Gerhardt (ÄMP) „Schicksal in den Sternen – die Anfänge des Tierkreises“ Thursday 7 April 2026, 18:15–19:00

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HOROI Project @horoiproject.bsky.social · 01/04/2026

I’ve posted the March digest of the HOROI Project. It summarizes ongoing translation work (Theophilus, Dorotheus, Rhetorius) and situates HOROI Talk #20 within the broader development of the project, with a brief outlook for April. www.patreon.com/posts/monthl...

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Monthly Digest, March 2026 | HOROI Project

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HOROI Project @horoiproject.bsky.social · 24/03/2026

HOROI Talk #20: The Elemental Qualities and the Subdivisions of the Zodiac concludes the first series w/ an examination of the seasonal quarters, signs, decan, monomoiria, etc., also in light of their elemental qualities and planetary association. March 29, 4 pm UTC. www.patreon.com/posts/elemen...

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The Elemental Qualities and the Subdivisions of the Zodiac (HOROI Talk #20) | HOROI Project

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HOROI Project @horoiproject.bsky.social · 03/03/2026

I’ve posted the February digest. It summarizes new translation work (Theophilus, Dorotheus, Rhetorius, Abū Maʿshar), reflects on a negative result regarding supposed Dorothean material, and outlines the March plans, including a talk on zodiac and sign divisions. www.patreon.com/posts/monthl...

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Monthly Digest, February 2026 | HOROI Project

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HOROI Project @horoiproject.bsky.social · 17/02/2026

The regular Q&A session is open until Friday. Any questions, including requests for second opinions and direct readings, are welcome. www.patreon.com/posts/q-febr...

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Q&A, February 2026 | HOROI Project

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HOROI Project @horoiproject.bsky.social · 02/02/2026

The January digest of HOROI Project is now available. You'll find the highlights of the new translations (Rhetorius/Dorotheus, Valens, Abū Maʿshar), a summary of HOROI Talk #19 on the development of planetary significations, and what is expected in February. www.patreon.com/posts/monthl...

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Monthly Digest, January 2026 | HOROI Project

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HOROI Project @horoiproject.bsky.social · 27/01/2026

The historical development of the astrological understanding of the planets is a long story. I've attempted to cover all its important aspects in HOROI Talk #19, a massive 4-hour lecture spanning from 3000 BCE to the present day. I hope you'll like it! www.patreon.com/posts/wild-s...

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The Wild Sheep: The Planets from Babylon to Alexandria (talk #19) | HOROI Project

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HOROI Project @horoiproject.bsky.social · 19/01/2026

A HOROI Talk dedicated to the planets? See you on January 25!

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HOROI Project @horoiproject.bsky.social · 16/01/2026

Maybe the zillionth translation, but I’m still happy I’ve done it www.patreon.com/posts/valens...

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Valens on the nature of the planets | HOROI Project

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HOROI Project @horoiproject.bsky.social · 14/01/2026

Elemental theory is really a Procrustean bed for the planets

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HOROI Project @horoiproject.bsky.social · 12/01/2026

It took a bit more time than I’d expected, but Dorotheus’s nativities exemplifying success and failure as preserved in Māshāʾallāh’s surviving version are now available as the first installment of Rhetorius, Part V. www.patreon.com/posts/explan...

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An Explanation and Interpretation of All Astrology – V.1–7 | HOROI Project

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HOROI Project @horoiproject.bsky.social · 31/12/2025

I’ve posted the December digest of the HOROI Project. Rather than merely summarizing results, it focuses on points where manuscript comparison raises methodological questions that could affect previously completed work. www.patreon.com/posts/monthl...

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Monthly Digest, December 2025 | HOROI Project

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HOROI Project @horoiproject.bsky.social · 02/12/2025

November in retrospect: - horary astro from Abū Maʿshar, 1st transcribed/translated - Theophilus’s weather predictions from mss transcribed for the 1st time - place division & longevity stuff from Rhetorius, party brand new - a talk about the Moon’s roles in Hellenistic natal astro

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Monthly Digest, November 2025 | HOROI Project

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HOROI Project @horoiproject.bsky.social · 25/11/2025

- theories concerning lunar nodes and bendings - the doctrine of lunar days, a predictive technique that employs the Moon’s positions on the 3rd, 7th, and 40th days after birth 3/3 More info: www.patreon.com/posts/tales-...

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The Tales of the Moon, Part 2 (HOROI Talk #18) | HOROI Project

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HOROI Project @horoiproject.bsky.social · 25/11/2025

The topics to discuss: - the astrological understanding of conception and the use of conception horoscopes in rectifying natal horoscopes - ideas related to lunar phases and bonds, applications and separations - the various roles of the prenatal and preconceptional lunation 2/3

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The Tales of the Moon, Part 2 (HOROI Talk #18) | HOROI Project

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HOROI Project @horoiproject.bsky.social · 25/11/2025

HOROI Talk #17 focused on the Moon’s roles in various astrological traditions, except in Hellenistic natal astrology, a substantial subject in its own right. This very topic will be explored in HOROI Talk #18, scheduled for November 30. 1/3

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The Tales of the Moon, Part 2 (HOROI Talk #18) | HOROI Project

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HOROI Project @horoiproject.bsky.social · 21/10/2025

In Part 1, which will be delivered on Sunday, October 26, at 5 pm GMT, I will talk about the roles of the Moon in observational astrologies, lunar “zodiacs,” Babylonian functions modeling the Moon’s motion, and non-horoscopic uses of the Moon in Hellenistic general and catarchic astrology.

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HOROI Project @horoiproject.bsky.social · 21/10/2025

Arguably, the Moon is the most important planet in most types of astrology. In the next HOROI Talk, “The Tales of the Moon,” I will cover the uses and historical development of lunar concepts and conditions. Due to the abundance of relevant material, this talk is split into two parts.

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HOROI Project @horoiproject.bsky.social · 01/10/2025

For the whole monthly digest about HOROI Project activities in September, follow the link. www.patreon.com/posts/monthl...

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Monthly Digest, September 2025 | HOROI Project

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HOROI Project @horoiproject.bsky.social · 01/10/2025

Significations of planets and other goodies from Abū Maʿshar, the survival and adoption of infants discussed by Rhetorius, natal and electional uses of some lunar mansions… these are only the texts translated for the first time.

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Jeffrey Kotyk @jeffreykotyk.bsky.social · 23/09/2025

Important forthcoming volume. Astrologers at Work: Essays on the Practices and Techniques of Astrology in Memory of Helena Avelar. brill.com/display/titl...

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Jeffrey Kotyk @jeffreykotyk.bsky.social · 13/09/2025

Coming soon: "Astrologers at Work brings together fourteen scholars to explore the history of astrological practice, focusing on techniques, doctrines, and methods of interpretation across cultures and centuries." brill.com/display/titl...

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Astrologers at Work

"Astrologers at Work" published on 30 Oct 2025 by Brill.

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HOROI Project @horoiproject.bsky.social · 31/07/2025

In July, new translations from Abū Maʿshar, Dorotheus, Rhetorius, and Theophilus were produced. Find the monthly digest with a retrospect and the plans for August here: www.patreon.com/posts/monthl...

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Monthly Digest, July 2025 | HOROI Project

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HOROI Project @horoiproject.bsky.social · 12/07/2025

I mean, the querent produces or forms

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HOROI Project @horoiproject.bsky.social · 12/07/2025

My take is that H5 represents "children" in the broadest sense, including non-animate roles like artwork. Everyone/everything the produces or forms.

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HOROI Project @horoiproject.bsky.social · 12/07/2025

1. H5, if the teacher is the querent (H1), and the teacher-students dynamics are being investigated. 2. No. Under normal circumstances, I wouldn't use natural significators for main roles in the question.

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HOROI Project @horoiproject.bsky.social · 11/07/2025

I wonder if there's a lucky corner on the planet where most of them aren't clowns and/or baboons.

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