Fashion Calendars reveals the intricate systems driving the fashion industry, focusing on seasonal calendars, trend cycles, and runway schedules. These frameworks dictate design, production, and consumer behavior. The book explores how the industry maintains momentum through meticulously planned schedules. Notably, the traditional biannual calendar of Spring/Summer and Autumn/Winter has been dramatically accelerated by globalization and fast fashion, leading to pre-collections and micro-trends. The book examines the impact of these schedules, including how they influence design, manufacturing, and trend forecasting. It argues that these calendars, despite criticisms regarding unsustainable consumption, provide a necessary framework for managing creativity and distribution. Fashion Calendars begins defining each calendar type and its evolution, and culminates with a discussion on sustainability, inclusivity, and ethical production in fashion scheduling. The book distinguishes itself by offering a holistic perspective on fashion scheduling, analyzing its historical development, economic impact, and potential for future transformation. This approach blends industry reports, academic studies, and interviews to provide a balanced analysis of the forces shaping the fashion world.