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

Back on track. Theophilus comes tomorrow.

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 · 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

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

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

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

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 · 10/07/2025

“If Mercury and Venus are in fall in their own or each other’s terms, they make imitators or politicians, especially in Capricorn due to the Ape’s co-rising.” (Rhetorius)

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HOROI Project @horoiproject.bsky.social · 17/06/2025

Please accept my invitation to HOROI Talk #16, scheduled for Sunday, June 22, at 4 pm GMT.

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HOROI Project @horoiproject.bsky.social · 16/06/2025

Service announcement I learned that Kai Rui Ltd. is attempting to register the domain horoiproject.cn and its various permutations, clearly for scamming purposes. In the event that they succeed in doing so...

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HOROI Project @horoiproject.bsky.social · 28/05/2025

Together with uploading my most recent talk about the zodiac, a previous talk discussing “decennials” has been made public www.patreon.com/posts/decenn...

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The Decennials (talk #11) | HOROI Project

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Aerin Fogel || Queen Of Swords @queen-ofswords.bsky.social · 24/05/2025

Picked up a copy of this @caelien.bsky.social Review I wrote a piece in about the privilege of new astrologies 🥰

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HOROI Project @horoiproject.bsky.social · 24/05/2025

For fun, I asked ChatGPT to compile a list of celestial bodies — both within and beyond the Solar System — ranked by the gravitational influence they exert on Earth. The list is sorted in descending order using the base-10 logarithm of the maximum/minimum gravitational force.

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HOROI Project @horoiproject.bsky.social · 19/05/2025

New HOROI Talk on May 25 www.patreon.com/posts/zodiac...

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HOROI Project @horoiproject.bsky.social · 30/04/2025

The most substantial extant version of Dorotheus’s influential but largely lost astrological poem is the Arabic text known as “Carmen astrologicum.” But this version, apart from spurious additions, omits several sections and details of the genuine poem.

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The fragments of Dorotheus of Sidon – Introduction and frr. 2.A–B | HOROI Project

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HOROI Project @horoiproject.bsky.social · 28/04/2025

Do you know what Dorotheus wrote about activity/profession?

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HOROI Project @horoiproject.bsky.social · 16/04/2025

Translating the only remaining small chapter from Pseudo-Porphyry’s Introduction gave me the opportunity to append some other texts, related in various ways, on the planets. This goes under open access. Enjoy! www.patreon.com/posts/colors...

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The colors, benefactions, gifts, vices, and faculties of the planets | HOROI Project

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HOROI Project @horoiproject.bsky.social · 31/03/2025

It’s the end of March. Time to publish the monthly digest of HOROI Project! www.patreon.com/posts/125598...

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Monthly Digest, March 2025 | HOROI Project

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HOROI Project @horoiproject.bsky.social · 28/02/2025

February is over, and so are the translations of Rhetorius’s and Theophilus’s chapters on the twelve places. For more information, follow the link to the monthly digest: www.patreon.com/posts/monthl...

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Monthly Digest, February 2025 | HOROI Project

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HOROI Project @horoiproject.bsky.social · 27/02/2025

HOROI Talk #9 about the Mesopotamian origins of exaltations is now publicly available www.patreon.com/posts/exalta...

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Exaltations: Origins and Developments (talk #9) | HOROI Project

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HOROI Project @horoiproject.bsky.social · 17/02/2025

Join me for the upcoming HOROI Talk on February 23, Sunday, at 5 pm GMT. Titled “Whole Lotta Lots,” this talk of about 90 to 120 minutes will focus on the lots (klēroi, aka “Arabic parts”): their historical development as much as it can be reconstructed, their logic, and use.

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HOROI Project @horoiproject.bsky.social · 31/01/2025

January’s flagship text was some previously unedited/untranslated Abū Maʿshar on the vernal ingresses and the eclipses. It’s now open-access, so why not check it? www.patreon.com/posts/book-i...

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Book I of Abū Maʿshar’s Secrets of Astrology – Introduction and Chapters 1–2 | HOROI Project

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HOROI Project @horoiproject.bsky.social · 28/01/2025

HOROI Talk #8, titled "Support and Obstruction in Configurations," is now publicly available: www.patreon.com/posts/100236...

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Support and Obstruction in Configurations (talk #8) | HOROI Project

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HOROI Project @horoiproject.bsky.social · 20/01/2025

Join me for HOROI Talk #13 on Sunday, January 26, at 5 pm GMT. Titled “Fixed Stars and Asterisms,” this talk will be devoted primarily to the titular subject... [1/3]

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