# Phaseis treats heliacal risings of fixed stars as a public calendar-book Date: 150 ## The fact Phaseis treats the heliacal risings of fixed stars and associated weather-signs. The dated calendar-book is not the Almagest star-catalogue debate and not Tetrabiblos. [Ptolemy](/people/ptolemy)’s documented role is: He wrote on the phases of the fixed stars and weather-signs. Later manuscripts are carriers; he did not typeset them. Do not twin this with the Almagest star-catalogue debate. Phaseis is a calendar of risings, not the catalogue-theft heading. Later editors, printers, and excavators remain named where they appear. Ptolemy's documented role is: He wrote on the phases of the fixed stars and weather-signs. Later manuscripts are carriers; he did not typeset them. ## Context A parapegma tradition, unnamed copyists, and later weather-lore already sit in the file. A rising-list is not unique authorship of every later farmer’s calendar. Later editions are access. Named others on the file: Unnamed copyists, later editors, and neighbouring parapegma authors share the treatise. The public setting is the file around 0150-07-01. Unnamed clerks, soldiers, printers, or later editors may appear without becoming this instrument. The instrument stays Phaseis treats heliacal risings of fixed stars as a public calendar-book. The setting of Phaseis treats heliacal risings of fixed stars as a public calendar-book is the public file around 0150-07-01. Shared offices, unnamed crews, printers, or later editors may appear without becoming this instrument. Driver edu-[digital-learning-access](/drivers/edu-digital-learning-access) is attached because the significance names a mechanism from this act, not because a standing list needed coverage. ## Evidence and sources Britannica independently identifies Phaseis as a distinct Ptolemaic star-calendar work. Official: Britannica — Ptolemy, Phaseis (https://www.britannica.com/biography/Ptolemy; Encyclopaedia Britannica). Independent: Britannica — heliacal rising, Ptolemaic treatment (https://www.britannica.com/science/heliacal-rising; Encyclopaedia Britannica). The two URLs are different pages. Where the carrier is a later edition or a received narrative, that limit is stated rather than upgraded to an autograph. Official carrier: Britannica — Ptolemy, Phaseis (https://www.britannica.com/biography/Ptolemy; Encyclopaedia Britannica). Independent carrier: Britannica — heliacal rising, Ptolemaic treatment (https://www.britannica.com/science/heliacal-rising; Encyclopaedia Britannica). Official or archival record: Britannica — Ptolemy, Phaseis (https://www.britannica.com/biography/Ptolemy; Encyclopaedia Britannica). ## Significance Improving education-access path: a public heliacal-rising calendar. Complex later carrier. Welfare reading improving. The attached mechanism is A dated star-calendar treatise put public heliacal-rising lists into a teaching file, distinct from the Almagest star catalogue as a possible Hipparchan reuse heading. Lag to any modern indicator is not treated as zero. This path is attached because the mechanism is named from this act, not because a driver list needed coverage. The welfare reading on this path is improving. If a number is not in the two records named above, it is not supplied here. ## What is established and what is not Established: Phaseis as a Ptolemaic treatise. Not established: that the Almagest catalogue is this same book. Established: a sourced public record of Phaseis treats heliacal risings of fixed stars as a public calendar-book under 0150-07-01. Established: a sourced public record of Phaseis treats heliacal risings of fixed stars as a public calendar-book under 0150-07-01. Confidence is stated on the impact path, not hidden in adjectives. Do not twin this with the Almagest star-catalogue debate. Phaseis is a calendar of risings, not the catalogue-theft heading. Mixed effects of Phaseis treats heliacal risings of fixed stars as a public calendar-book are separate paths. Later competitions, monuments, translations, UNESCO listings, museums, and adaptations are not converted into extra lifetime acts. The welfare reading used in this dossier is improving. That reading is an impact-path choice, not a property stored on the Fact itself. Shared responsibility is part of Phaseis treats heliacal risings of fixed stars as a public calendar-book. Naming Ptolemy does not delete co-authors, institutions, or later transmitters. The lag from 0150-07-01 to any measured indicator is not treated as zero. Alternative explanations — weather, other armies, later statutes, or independent cultural change — remain live where the sources do not close them. ## People - Ptolemy: https://factrail.ai/people/ptolemy ## Drivers - Digital Learning Access: https://factrail.ai/drivers/edu-digital-learning-access ## Sources - https://www.britannica.com/science/heliacal-rising - https://www.britannica.com/biography/Ptolemy ## Methodology https://factrail.ai/methodology Canonical: https://factrail.ai/facts/pto-phaseis