Hebrew & Jewish Studies


ERC Project ‘Calendars in Antiquity and the Middle Ages’, Workshop 1 

Diversity and Unity in Ancient and Medieval Calendars

18 February 2014

Room 433, 16 Taviton Street, SSEES Building, UCL 

The ERC Calendars project organizes a series of workshops on specific themes. The aim of these workshops is to share, discuss, and broaden our research with colleagues from the wider academic community.  Contributors to the workshops include members of our research team and international experts from outside the project. The workshops are open to anyone interested.

The theme of our first workshop is ‘Diversity and unity in ancient and medieval calendars’. In a sense, this theme captures the ERC Calendars project as a whole, as it is closely related to the main research questions of the project: how ancient and medieval calendars evolved, through processes of standardization and fixation, from diversity to unity. Contributions to this workshop include a broad range of periods and calendars, from the Roman Empire to medieval Islamic, Christian, and Jewish calendars.

Tel Fara Plaque, Courtesy of UCL Institute of Archaeology


9.30am - Registration

10am - Sacha Stern (UCL): 'Diversity and unity in ancient and medieval calendars: a macro-historical perspective'

11am - Coffee break

11.15am - Leah Di Segni (Hebrew University of Jerusalem): ‘Chronological systems in late antique Palaestina and Arabia’

12.15pm - Johannes Thomann (Zürich): ‘Arabic quittances, contracts, almanacs and ephemerides: documentary sources on the use of calendars in the medieval Islamic world’

1.15pm - Lunch

2.15pm - François de Blois (UCL): ‘Polemics about the beginning and the end of Ramadan in Islamic astronomical and theological works’

3.15pm -  Leofranc Holford-Strevens (Oxford): 'Medieval Liturgical Calendars in Catholic Europe'

4.15pm - Tea break

4.30pm - Ilana Wartenberg (UCL): ‘The Jewish calendar in Isaac Israeli's Yesod Olam’

5.30pm - Concluding discussion

6pm - Workshop ends

The workshop runs as part of the research project 'Calendars in Late Antiquity and the Middle Ages: Standardization and Fixation'

To download the Workshop Poster click here. (PDF)