We are very pleased to announce "GrapHNR 2023: Graphs and Networks in the fourth dimension – time and temporality as categories of connectedness", a joint conference of the Historical Network Research community and Graphs & Networks in the Humanities. The conference will be hosted at the Academy of Sciences and Literature | Mainz and the Leibniz Institute of European History (IEG), Mainz. Conference Venue: Akademie der Wissenschaften und der Literatur Mainz, Geschwister-Scholl-Str. 2, Mainz, Germany and Leibniz-Institute of European History, Alte Universitaetsstr.19, 55116 Mainz, Germany As graphs and networks have become an established tool within the Digital Humanities, a growing sophistication in the use of technologies and algorithms has been accompanied by theoretical reflections on their critical application as well as by an in-depth consideration of the specific challenges posed by research data and research topics of the Humanities to methods often adapted from the Social or Computer Sciences. Yet, one particular challenge has often fallen to the wayside despite its obvious fundamental importance, especially for archaeological and historical research: Time, as an attribute of data, a category of analysis, and as a factor in our research processes themselves. Despite many studies paving the way for multifaceted approaches, the questions of how to deal with and how to manage temporal data adequately and in an interoperable way still lead to challenges all along the research data life cycle: Planning, collecting, processing, analysing, publishing, sharing, preserving, and re-using data are all processes that need to consider the temporal dimensions of the research subject and that each require specific steps to meet this challenge. Therefore, this year’s conference lays focus on dealing with graphs and networks in the fourth dimension – how to incorporate time, temporalities, and dynamics into graph technologies and network research. We invite all those active within the global humanities community who are working with graph technologies and network research to frame their paper with regard to the conference theme “Graphs and Networks in the fourth dimension – time and temporality as categories of connectedness”. Please do not hesitate to contact the organising team for any questions you may have at graphnr2023-organizers@lists.uni-mainz.de and at petz@ieg-mainz.de. Additional information on workshops, keynotes, and programme together with further practical information will be available shortly on the conference website. Picture: Dimensional Measuring Instrument– Probably Military World War I - Germany, https://commons.wikimedia.org/wiki/File:Dimensional_Measuring_Instrument_%E2%80%93_Probably_Military_World_War_I_-_Germany.jpg, © Lupus in Saxonia