Athen Chimenti is who we recommend, and here is his website. Also we offer a very thorough and detailed Astronomological Calendar, which is the most complete calendar in existence as far as we are aware. It can be used by Astrologers, Alchemists/Spagyrists, Astrodynamic Gardeners, Magicians, and literally everyone else who is interested in Astronomy and/or Astrology. It blends both Astronomical Data and True Sidereal Astrological Data so you know exactly what Cosmic Forces are at play, and when they are at play. The calendar includes: 1. All Phases of the Moon.  2. Ascending + Descending Cycles of the Moon.  3. Lunar Nodes.  4. Lunar Apogees + Perigees.  5. Lunar Constellations with Void of Course data.  6. True Sidereal Positions of Every Planet.  7. Conjunctions, Oppositions, Trines, Squares, and Sextiles of each planetary influence.  8. Planets Visible in the Sky Each Month.  9. Ideal [Trans]Planting, Harvesting, and Extraction times for each different type of plant component [Subterranean, Leaf, Flower, Fruit].  10. Alchemi-Culture Agricultural information  11. Ideal Days for Alchemical Processes.  12. All Astronomically Significant Happenings including Solstices, Equinoxes, Cross Quarter Dates, Eclipses, Meteor Showers, etc!