Hidden in Historicism considers how the nineteenth-century philosophy of historicism depicts three "forgotten time regimes": a time of rise and fall, an ambiguous time of synchronicity of the non-synchronous, and a time in which decisive moments dominate. Before the eighteenth century, time was past-oriented. This inversed in the Enlightenment, when the future became dominating. Today, this time of progress continues to be embraced as a "time of the modern". Yet, inequality, increasing violence and climate change lead to doubts over a bright future. In this book, Harry Jansen moves away from the heritage of Reinhart Koselleck and his single time of the modern towards a historicist, threefold temporal approach to history writing. In the time regime of the twenty-first century past, present and future coexist. It is a heterogeneous time that takes on the three forms of historicism. Jansen’s study shows how all three times exist together in current historiography and contribute to a better understanding of the world today. Based on the idea that an incarnated time rules everything that happens it reality, the book offers a fresh perspective on the ongoing discussion about time and time regimes in contemporary philosophy and theory of history for students and scholars, both time specialists and the non-specialist.