This project delves into the ubiquitous yet nuanced realm of calendars, examining their pragmatic evolution from the early stages as incunabula to contemporary digital manifestations synchronized with personal computers and smartphones. While the majority now engage with calendars in digital formats, historical relics persist in the form of single-leaf printed calendars, such as the 'Bawren-Practica' and 'Wetterbüchlein,' as well as diverse iterations like farmers’ calendars and workers’ calendars. 

This endeavor encompasses a comprehensive exploration of the material and format history of calendars, mapping their evolution diachronically and systematically. Beyond mere chronology, the project delves into the socio-historical, epistemological, and political dimensions of calendar design and usage. In the late 18th and 19th centuries, calendars, spanning all social strata in a mass and regionally diversified manner, absorbed and transmitted the life-world experience of time. Notably, calendars such as the Lahrer Hinkender Bote, persisting in an ostensibly anachronistic fashion online, underscore the enduring appeal of certain formats. 

The investigation extends beyond mere historical documentation, exploring the dialectic interplay between organizational structures embedded in calendars and their capacity for cognitive transgression. These calendars, functioning as temporal mediums and discourse aggregators, not only reflect their respective epochs but also contribute to shaping them through normative influences. The project thus seeks to unravel the intricate relationship between organization, cognition, and epochal experiences encapsulated in the multifaceted narrative of the calendar.