Astrologer and author Doctor H joins host Jenn Zahrt this week! Tune in for an immersive episode covering books, chart rectification and more, including: Babylonian cuneiform tablets; studying systems of time; and solar returns and primary directions. Plus: Medieval predictive astrology, price and time as mathematical constants, and the importance of reading widely!

Visit CAELi’s Within Orb pod page!

Learn more about the CAELi Institute and check out their latest lab offerings.

Visit our bookshop.org page to support CAELi and purchase books mentioned on the show!

Become a CAELi member or renew your membership!

Love the show? Support our work with a financial contribution or book donation.

Follow CAELi on FB, IG, YouTube, and Bluesky.

Transcripts available upon request.

Song “Wake Up” used with permission by The E-Block Band.

*****

Episode timestamps (conversation recorded June 2025):

00:12 – Doctor H completed Robert Zoller’s Diploma in Medieval Predictive Astrology in March 2025 and maintains a full-time practice with a handful of clients. Surplus time is dedicated to research on the efficacy of recently recovered traditional astrological techniques.

04:58 – Doctor H doesn’t recall his very first astrology book, but Robert Zoller’s Diploma Course in Medieval Astrology had a huge impact!

10:02 – If Doctor H could bring only three books to a deserted island, his first pick would be Babylonian Mathematical Astronomy: Procedure Texts by Mathieu Ossendrijver.

20:10 – Interlude: Join the CAELi Support Drive and for only $35, you can enjoy your morning beverage out of a gorgeous CAELi mug!

20:56 – Doctor H’s second choice would be The Oxford Companion to the Year: An Exploration of Calendar Customs and Time-Reckoning by Bonnie Blackburn and Leofranc Holford-Strevens.

24:51 – The third title Doctor H would bring is Abu Ma’shar’s Persian Nativities IV: On the Revolutions of the Years of Nativities, translated and edited by Benjamin Dykes.

44:21 – For beginners, Doctor H recommends Introductions to Traditional Astrology: Abu Ma’shar & al-Qabisi which is translated and edited by Benjamin Dykes, The Four Temperaments: A Rediscovery of the Ancient Way of Understanding Health and Character by Randy Rolfe, and Fowler’s Practical Phrenology by Orson Squire Fowler.

49:13 – Find Doctor H at his website: https://www.regulus-astrology.com/.

50:06 – Thanks for listening to Within Orb! If you love the show, please help support it at no cost to you: Follow or subscribe wherever you listen, rate it five stars, or write a happy review! And if you’d like to become a CAELi member or support our work with a contribution of any amount, we’d be delighted – thanks!

Show notes and production by Jen Braun of JJ Boots Productions LLC.