Time, Astronomy, and Calendars – serie

The beginnings of scientific chronology are usually associated with the work of the great Renaissance philologist Joseph Scaliger (1540–1609), but this perspective is challenged by the existence of a vivid pre-modern computistical tradition, in which technical chronological questions, especially regarding the life of Jesus, played an essential role. Christian scholars such as Roger Bacon made innovative breakthroughs in the field of historical dating by applying astronomical calculations, critical exegesis, and the study of the Jewish calendar to chronological problems. Drawing on a wide selection of sources that range from late antiquity to 1600, this book uses the history of the date of Christ’s Passion to shed new light on the medieval contribution to science and scholarship.

The study of time, astronomy, and calendars, has been closely intertwined in the history of Western culture and, more particularly, Jewish tradition. Jewish interest in astronomy was fostered by the Jewish calendar, which was based on the courses of the sun and the moon, whilst astronomy, in turn, led to a better understanding of how time should be reckoned. Time, Astronomy, and Calendars in the Jewish Tradition, edited by Sacha Stern and Charles Burnett, presents a wide selection of original research in this multi-disciplinary field, ranging from Antiquity to the later Middle Ages. Its variety of approaches and sub-themes reflects the relevance of astronomy and calendars to many aspects of Jewish, and more generally ancient and medieval, culture and social history.Contributors include: Jonathan Ben-Dov, Reimund Leicht, Marina Rustow, Francois de Blois, Raymond Mercier, Philipp Nothaft, Josefina Rodriguez Arribas, Ilana Wartenberg, Israel Sandman, Justine Isserles, Anne C. Kineret Sittig, Katharina Keim, and Sacha Stern

During the later Middle Ages (twelfth to fifteenth centuries), the study of chronology, astronomy, and scriptural exegesis among Christian scholars gave rise to Latin treatises that dealt specifically with the Jewish calendar and its adaptation to Christian purposes. In Medieval Latin Christian Texts on the Jewish Calendar C. Philipp E. Nothaft offers the first assessment of this phenomenon in the form of critical editions, English translations, and in-depth studies of five key texts, which together shed fascinating new light on the avenues of intellectual exchange between medieval Jews and Christians.

Astronomical and astrological knowledge circulated in many ways in the ancient world: in the form of written texts and through oral communication; by the conscious assimilation of sought-after knowledge and the unconscious absorption of ideas to which scholars were exposed. The Circulation of Astronomical Knowledge in the Ancient World explores the ways in which astronomical knowledge circulated between different communities of scholars over time and space, and what was done with that knowledge when it was received. Examples are discussed from Mesopotamia, Egypt, the Greco-Roman world, India, and China.

"Clock time", with all its benefits and anxieties, is often viewed as a "modern" phenomenon, but ancient Mediterranean and Near Eastern cultures also had tools for marking and measuring time within the day and wrestled with challenges of daily time management. This book brings together for the first time perspectives on the interplay between short-term timekeeping technologies and their social contexts in ancient Egypt, Babylon, Greece, and Rome. Its contributions denaturalize modern-day concepts of clocks, hours, and temporal frameworks; describe some of the timekeeping solutions used in antiquity; and illuminate the diverse factors that affected how individuals and communities structured their time.

In the year 921/2, the Jewish leaders of Palestine and Babylonia disagreed on how to calculate the calendar. This led the Jews of the entire Near East to celebrate Passover and the other festivals, through two years, on different dates. The controversy was major, but it became forgotten until its late 19th-century rediscovery in the Cairo Genizah. Faulty editions of the texts, in the following decades, led to much misunderstanding about the nature, leadership, and aftermath of the controversy. In this book, Sacha Stern re-edits the texts completely, discovers many new Genizah sources, and challenges the historical consensus. This book sheds light on early medieval Rabbanite leadership and controversies, and on the processes that eventually led to the standardization of the medieval Jewish calendar.

The 17th-century Brahmatulyasāraṇī is a rich repository of information about Indian mathematical astronomy and its genres of scientific writing in Sanskrit. This painstaking critical edition, translation, and technical analysis of the work includes detailed technical background about its content and relation to the seminal 12th-century astronomical handbook Karaṇakutūhala. This book explores important contextual information about the role and study of numerical tables in pre-modern astronomy, as well as the many challenges arising from critically editing numerical data in the Indian astral sciences.

Calendars in the Making investigates the origins of calendars we are most familiar with today, yet whose early histories, in the Roman and medieval periods, are still shrouded in obscurity. It examines when the seven-day week was standardized and first used for dating and time reckoning, in Jewish and other constituencies of the Roman Empire; how the Christian liturgical calendar was constructed in early medieval Europe; and how and when the Islamic calendar was instituted. The volume includes studies of Roman provincial calendars, medieval Persian calendar reforms, and medieval Jewish calendar cycles. Edited by Sacha Stern, it presents the original research of a team of leading experts in the field.Contributors are: François de Blois, Ilaria Bultrighini, Sacha Stern, Johannes Thomann, Nadia Vidro, Immo Warntjes.

This book explores the notebooks of S. Belle, an astrologer who lived in late fifteenth-century France, as a case study of late medieval astrological practice. These notebooks combine astrological doctrine, a large collection of horoscopes, an almanac, and three complete judgements of nativities. By studying Belle’s methods, processes of learning, and practices, this book contributes to a better understanding of the internal architecture of astrology in the pre-modern world; this includes its techniques, methodologies, goals, transmission, and development throughout history. It offers an internalist view of the practice of astrology, as a counterpart to the existing research into astrology’s social and cultural impact.

Connections between the Society of Jesus and astrology used to appear as unexpected at best. Astrology was never viewed favourably by the Church, especially in early modern times, and since Jesuits were strong defenders of Catholic orthodoxy, most historians assumed that their religious fervour would be matched by an equally strong rejection of astrology. This groundbreaking and compelling study brings to light new Jesuit scientific texts revealing a much more positive, practical, and nuanced attitude. What emerges forcefully is a totally new perspective into early modern Jesuit culture, science, and education, highlighting the element that has been long overlooked: astrology.

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. Originating from the Tools of the Art conference, organised by the Astra Project in memory of Helena Avelar, this volume highlights astrology’s technical and intellectual dimensions, placing it at the heart of pre-modern science and culture. Through detailed studies of charts, doctrines, and practices, it reveals the central role astrology played in shaping ideas about nature, knowledge, and fate. This work is a vital contribution to the history of science, culture, and ideas.