Abbot Johannes Trithemius (1462–1516) developed a distinctive esoteric theory of history that combined astrology and magic as tools for interpreting the past and anticipating future events. His most comprehensive work on the subject, entitled De septem secundeis (1508), outlines a theoretical system for computing world history from Creation to the year 1525. According to Trithemius, history progresses in cycles of 354 lunar years, each governed by one of seven angelic intelligences, or planetary spirits, whose regency shapes the character and direction of earthly happenings. While building on cryptographic ideas first introduced in his earlier Steganographia, the philosophical scope of De septem secundeis broadens considerably, drawing on medieval sources such as Albumasar, Albertus Magnus and Peter of Abano. Following his esoteric assumptions, Trithemius presents astrology, theology, and prophecy as interconnected methods for discerning divine will as it unfolds through history. Through this framework, the abbot engages major sixteenth-century debates on astrological determinism, human free will, religious reform, and eschatology, offering a philosophical response grounded in a vision of history as a divinely structured and intelligible order.