The workshop of 7 February 2023 centered around time practices in the early Islamic world. Dr. Johannes Thomann (University of Zürich) shared interesting examples of what research into weeks and weekdays in the early Islamic world could yield. This seems to be unscathed territory. He showed how literary and documentary sources, both in Egypt and Al-Andalus, are suitable for this kind of new research. Afterwards, Dr. Eugenio Garosi, a member of the project team, shared his thoughts on dating formulas and scribal practices in the early Islamic imperial administration. As the dating formula is one of the few elements of official documents that allow for a scribe’s individual expression, one asks oneself what the differences in (the use of) dating formulas between chancelleries and document types mean and express.”